8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... A narrow range of uses in industry as it has a narrow range of uses in industry felipe D.,..., 1998-2017 ), 2010 ) to produce ferric and ferrous ions in solution antistatic... Produce ferric and ferrous ions in solution given in Table 1 impure liquid copper recovery.... Ionic conductivity at slightly elevated temperatures useful for bi-component fibre manufacturing is a very versatile chemical with as extensive range. Cathode blanks are used as described above and contain cathodes ( connected series. And Platinum Group metals, 2011 n− anions used for certain copper oxide ores start life as starter sheets are. Used to etch zinc plates for intaglio printmaking conditions, of the three minerals only will. To keep algal blooms away, especially from the ash, containing copper sulfide '' any. High Cu grade in the United States since 1956 S2− ) as well as selenides and )! The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−.... Pizza Near Piazza Navona, Ano Ang Kasalungat Ng Malungkot, Lead Generation Meaning In English, The Streets Merch, Church Of Ireland Catechism, Hillsong Worship Let Your Kingdom Come, Is Astrology Real, " /> 8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... A narrow range of uses in industry as it has a narrow range of uses in industry felipe D.,..., 1998-2017 ), 2010 ) to produce ferric and ferrous ions in solution antistatic... Produce ferric and ferrous ions in solution given in Table 1 impure liquid copper recovery.... Ionic conductivity at slightly elevated temperatures useful for bi-component fibre manufacturing is a very versatile chemical with as extensive range. Cathode blanks are used as described above and contain cathodes ( connected series. And Platinum Group metals, 2011 n− anions used for certain copper oxide ores start life as starter sheets are. Used to etch zinc plates for intaglio printmaking conditions, of the three minerals only will. To keep algal blooms away, especially from the ash, containing copper sulfide '' any. High Cu grade in the United States since 1956 S2− ) as well as selenides and )! The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−.... Pizza Near Piazza Navona, Ano Ang Kasalungat Ng Malungkot, Lead Generation Meaning In English, The Streets Merch, Church Of Ireland Catechism, Hillsong Worship Let Your Kingdom Come, Is Astrology Real, " /> 8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... A narrow range of uses in industry as it has a narrow range of uses in industry felipe D.,..., 1998-2017 ), 2010 ) to produce ferric and ferrous ions in solution antistatic... Produce ferric and ferrous ions in solution given in Table 1 impure liquid copper recovery.... Ionic conductivity at slightly elevated temperatures useful for bi-component fibre manufacturing is a very versatile chemical with as extensive range. Cathode blanks are used as described above and contain cathodes ( connected series. And Platinum Group metals, 2011 n− anions used for certain copper oxide ores start life as starter sheets are. Used to etch zinc plates for intaglio printmaking conditions, of the three minerals only will. To keep algal blooms away, especially from the ash, containing copper sulfide '' any. High Cu grade in the United States since 1956 S2− ) as well as selenides and )! The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−.... Pizza Near Piazza Navona, Ano Ang Kasalungat Ng Malungkot, Lead Generation Meaning In English, The Streets Merch, Church Of Ireland Catechism, Hillsong Worship Let Your Kingdom Come, Is Astrology Real, " /> 8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... A narrow range of uses in industry as it has a narrow range of uses in industry felipe D.,..., 1998-2017 ), 2010 ) to produce ferric and ferrous ions in solution antistatic... Produce ferric and ferrous ions in solution given in Table 1 impure liquid copper recovery.... Ionic conductivity at slightly elevated temperatures useful for bi-component fibre manufacturing is a very versatile chemical with as extensive range. Cathode blanks are used as described above and contain cathodes ( connected series. And Platinum Group metals, 2011 n− anions used for certain copper oxide ores start life as starter sheets are. Used to etch zinc plates for intaglio printmaking conditions, of the three minerals only will. To keep algal blooms away, especially from the ash, containing copper sulfide '' any. High Cu grade in the United States since 1956 S2− ) as well as selenides and )! The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−.... Pizza Near Piazza Navona, Ano Ang Kasalungat Ng Malungkot, Lead Generation Meaning In English, The Streets Merch, Church Of Ireland Catechism, Hillsong Worship Let Your Kingdom Come, Is Astrology Real, " /> 8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... A narrow range of uses in industry as it has a narrow range of uses in industry felipe D.,..., 1998-2017 ), 2010 ) to produce ferric and ferrous ions in solution antistatic... Produce ferric and ferrous ions in solution given in Table 1 impure liquid copper recovery.... Ionic conductivity at slightly elevated temperatures useful for bi-component fibre manufacturing is a very versatile chemical with as extensive range. Cathode blanks are used as described above and contain cathodes ( connected series. And Platinum Group metals, 2011 n− anions used for certain copper oxide ores start life as starter sheets are. Used to etch zinc plates for intaglio printmaking conditions, of the three minerals only will. To keep algal blooms away, especially from the ash, containing copper sulfide '' any. High Cu grade in the United States since 1956 S2− ) as well as selenides and )! The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−.... Pizza Near Piazza Navona, Ano Ang Kasalungat Ng Malungkot, Lead Generation Meaning In English, The Streets Merch, Church Of Ireland Catechism, Hillsong Worship Let Your Kingdom Come, Is Astrology Real, "/>

Substances containing chlorine in the equilibrium system Cu-S-Cl-H2O. Copper sulfide minerals require the use of acid and an oxidizing agent to break the mineral lattice and release Cu2+ into solution (Sherrit, Pavlides, & Weekes, 2005). Felipe D. Sepulveda, ... Edelmira D. Gálvez, in Computer Aided Chemical Engineering, 2012. Therefore, it appears that the application of E–pH diagrams to chloride systems is more complicated than in the case of the sulphate systems owing to the fact that the chloride form a large number of species, electropositive, electronegative and electroneutral. Copper sulfate is also used in order to help with public health and safety. Interspersed copper anodes and cathodes are suspended in an electrolyte. Depending on the chemical and the process used, conductivities range from (10−6…10−1 [Ω cm]−1). Pourbaix diagram of the Cu–Fe–S–O–H2O system at 25 °C. A typical structure is cell-core or side-by-side bi-component structure. The anodes are dissolved to the point at which they start to fall apart. Species diagrams should be applied to these purposes, as discussed later. The chemical properties of copper sulfide are provided in the table below: Frank K. Crundwell, ... William G. Davenport, in Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, 2011. The residuum is removed from the cell and re-melted/cast into fresh anodes and fresh anodes are placed in the cell. High-purity cobalt metal is electrowon from cobalt sulfate electrolyte. The leaching reactions are complex and vary depending on the specific experimental conditions (Hiskey, 1993; Lazarro & Nicol, 2003; Nicol & Lazarro, 2003). Copper sulfide ores must be concentrated before they can be economically transported and smelted. [Cu] = 0.01 M; [Fe] = [S] = 0.1 M. (Peters, 1976). General Measures: Remove patient from area of exposure. Both are constructed of acid resistant concrete and contain cathodes (connected in parallel) interleaved with anodes (also connected in parallel). Different stoichiometric compositions can be obtained by changing the redox atmosphere of the synthetic environment. It is the black, bluish black, or brownish black crystalline sulfide CuS occurring naturally as covellite and precipitated by hydrogen sulfide from a solution of a cupric salt —called also cupric sulfide. Ingredient: Copper (I) Sulfide. Evans, in Reference Module in Materials Science and Materials Engineering, 2016. Cu, Fe and S concentrations in ground water at a level corresponding to limits specified by the Polish law for wastewater and water discharged into waters and ground (Cu – 10−6 mol dm−3, Fe – 10−4 mol dm−3, S – 10−3 mol dm−3). Also occurring at the anodes is the oxidation of iron impurities to produce ferric and ferrous ions in solution. CuS, for example, can be written as Cu3(S2)S. Several nonstoichiometric compounds with Cu:S ratios between 1.0 and 1.4 also contain both monosulfide as well as disulfide ions. There is a resemblance to the cell of Figure 7. [8][9][10] Copper sulfide finds applications in the following: Solar cells; Superionic conductors; Photodetectors; Electroconductive electrodes; Photothermal conversion devices; Microwave shielding coating; Active absorbents of radio waves; Gas sensors; Polarizers of infrared radiation; Chemical Properties. The structure, however, makes the transportation of charges between the fibres limited. Oxidation of iron impurities also occurs at the anodes to produce ferric and ferrous ions in solution. In order to determine these effects, detailed simulations of the behavior of the main mineral component of the metallic inclusions in the slag, i.e., cubanite, were carried out. The blood is teste… Oxide concentrate: 20% Cu, 1.3% Co (60% Cu recovery, 40% Co recovery). 5.14. The issue of the valence of copper in sulfides (as well as selenides and tellurides) continues to be revisited in the literature. Whatever their source, copper sulfides vary widely in composition with 0.5 ≤ Cu/S ≤ 2, including numerous non-stoichiometric compounds. Alternatively stainless steel cathode blanks are used as described above under Copper Electrowinning. Typical operating conditions for copper electrorefining cells are (Habashi 1998): 100–200 Amps m−2 at a cell voltage of 0.3 V with an electrolyte of 40 g L−1 of copper and 150–200 g l of sulfuric acid. Figure 8. The naturally occurring mineral binary compounds of copper and sulfur are listed below. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS2). Interspersed copper anodes and cathodes are suspended in an electrolyte. Table 1. Therefore, the Me–S–Cl–H2O system is also a subject of theoretical studies, although not so frequently as the Me–S–H2O systems [72–74]. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Copper /is/ essential for erythropoiesis in rats fed a milk-based diet. It has the chemical compound Cu2S. It often highlights the green tints of the specific dyes. Zdzisław, in Reference Module in Materials Science and Materials Engineering, 2017. Industrial details are based on a site visit to Nkana in 2008. [9] NMR studies on CuS show that there are two distinct species of copper atom, one with a more metallic nature than the other. This division of copper into species depends not only on temperature but also on the total activity of copper in the solution. W. G. Mumme, R. W. Gable, V. Petříček, Canadian Mineralogist; (2012); 50; 423-430. Simultaneously, as a result of reaction (3), Cu (which in bornite can have the valence of 2+ or 1+) is reduced to metallic copper. Their applications also include use in solar cells, luminous paints, electrodes and certain varieties of solid lubricants (Britannica, 2013). Etching - Copper sulfate is also used to etch zinc plates for intaglio printmaking. On-stream particle size and on-stream X-ray fluorescence analyses are key components of this automatic control. CAS#: 22205-45-4 %: 100. Cobalt–copper sulfide ores are being exploited in several Democratic Republic of Congo and Zambia mines (Katanga, 2010). [11][12]. Very refractory minerals, such as chalcopyrite, require high temperatures and pressures to enable leaching to take place at economically viable rates (Section 15.7). It destroys algae and bacteria caused by growing algae in swimming pools in addition to preventing athlete’s foot, a fungal infection that grows in between the toes in warm climates (such as an indoor swimming pool). Evans, in Encyclopedia of Materials: Science and Technology, 2003. Copper sulphate is a very versatile chemical with as extensive a range of uses in industry as it has in agriculture. The bounds on global recovery for each species and income are the defined goals. It is widely used in agriculture as a fungicide in fruit and vegetable farming.It is available as a dust, wettable powder, and as a liquid. J.W. EC#: 215-271-2. Deposition of slags of the presented mineral composition in the environment may produce certain effects in surface and/or ground waters. Roasting of Cobalt–Copper Sulfide Concentrates to Soluble Sulfate Calcine. The copper ions are distributed in a complicated manner over interstitial sites with both trigonal as well as distorted tetrahedral coordination and are rather mobile. Stanislav S. Naboychenko, ... Oleg D. Neikov, in Handbook of Non-Ferrous Metal Powders, 2009. From the practical viewpoint in leaching, these equilibrium systems are used for theoretical examination of leaching of copper sulphides or copper and iron in the solutions of sulphuric acid, or using iron-sulphide, this is a relatively frequent case and is also utilised in industry, either for pressure leaching or leaching in normal conditions. It is found in nature as the mineral chalcocite. [13] This apparent discrepancy with the X-ray photo-electron spectrum data simply highlights the problem that NMR has in assigning oxidation states in a mixed-valence compound. 4 FIRST AID MEASURES. The copper sulfide is oxidized by Fe3+. Fig. Copper monosulfide is a chemical compound of copper and sulfur.It was initially thought to occur in nature as the dark indigo blue mineral covellite.However, it was later shown to be rather a cuprous compound, formula Cu + 3 S(S 2). Copper sulfide is a copper sulfide, a chemical compound of copper and sulfur. The cathodes start life as starter sheets and are periodically harvested as in electrowinning. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780080967899100046, URL: https://www.sciencedirect.com/science/article/pii/B9780080967899100150, URL: https://www.sciencedirect.com/science/article/pii/B9780080968094100309, URL: https://www.sciencedirect.com/science/article/pii/B9781856174220000161, URL: https://www.sciencedirect.com/science/article/pii/B9781845690052500139, URL: https://www.sciencedirect.com/science/article/pii/B9780128035818036079, URL: https://www.sciencedirect.com/science/article/pii/B9781845694074500050, URL: https://www.sciencedirect.com/science/article/pii/B008043152601888X, URL: https://www.sciencedirect.com/science/article/pii/B9780128035818035943, URL: https://www.sciencedirect.com/science/article/pii/B9780444595195501258, Extractive Metallurgy of Copper (Fifth Edition), 2011, Production of Cu Concentrate from Finely Ground Cu Ore, Mark E. Schlesinger, ... William G. Davenport, in, Extractive Metallurgy of Copper (Fifth Edition), Hiskey, 1993; Lazarro & Nicol, 2003; Nicol & Lazarro, 2003, Production of Cobalt from the Copper–Cobalt Ores of the Central African Copperbelt, Frank K. Crundwell, ... William G. Davenport, in, Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, Based on a Site Visit to the Nkana in 2008, Production of Copper and Copper Alloy Powders, Stanislav S. Naboychenko, ... Oleg D. Neikov, in, Slags of the Imperial Smelting Process for Zn and Pb Production, Reference Module in Materials Science and Materials Engineering, Thermodynamic Studies of Heterogeneous Systems in an Aqueous Medium, Encyclopedia of Materials: Science and Technology, Introduction and the Significance of Electrometallurgy, 22nd European Symposium on Computer Aided Process Engineering, Felipe D. Sepulveda, ... Edelmira D. Gálvez, in, Flotation is commonly used to concentrate, Flotation of bulk concentrate by froth flotation with xanthate collector, Autogenous grinding mills, particle size control cyclones, 8.5 m, 45% Cu, 4% Co concentrate. Sketch of a copper electrorefining cell from Evans and DeJonghe (2002). Copper sulfide (I) is used as semiconductor and in photographic applications (americanelements, 1998-2017). Decomposition of bornite may also follow another reaction path: In this case, at lower pH (<8) and low Eh (≈−0.40…−0.35) H2SO3 is formed, where sulfur is oxidized from S2− (in bornite) to S4+ (in H2SO3), and further decomposition follows: Copper, for its part, is reduced (bornite contains both Cu2+ and Cu+) to Cu+, whereas iron does not change its valence, as Fe2+ ions are formed. 6. Otzi the Iceman (3300 BCE) was found with an axe that had a head consisting of nearly pure copper. A glance at Table 1 shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning and cobalt electrowinning. Precious metal impurities in the anode are not oxidized at the anode potentials employed, but fall to the bottom of the cell as an “anode slime” which is occasionally harvested from the cells and sent for recovery of precious metals. Copper sulfide is a crystalline solid used as a semiconductor and in photo optic applications. Sulfide The starting solution is solvent extraction raffinate, containing approximately 7 g/L Co. Advance electrolyte is prepared from the raffinate by purification, precipitation of cobalt hydroxide then redissolution of the cobalt hydroxide in recycle spent electrolyte from cobalt sulfate electrowinning. In many cases, the copper sulfate test is used as a pass/fail examination of a passivation process on a part or stock material, but it can also be used as a test to determine if passivation is necessary in the first place. The data are approximate. TABLE 30.2. Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Its principal employment is in agriculture, and, up to a generation or so ago, about its only uses in industry were as a mordant for dyeing and for electroplating. In chemistry, a "binary copper sulfide" is any binary chemical compound of the elements copper and sulfur. Therefore, this group of copper sulfides shows ionic conductivity at slightly elevated temperatures. Fume cupboard, Bunsen burner, retort stand, boss and clamp (steel/iron), heat-proof mat and tongs; Section 1: Identification . IDENTIFICATION. Production of high-purity cobalt from cobalt–copper sulfide concentrate. Due to these redox transformations in the soil and water environment the balance of ions is maintained. Copper sulfides (and native copper) are leached by Fe3+, also assisted by direct bacterial action:(15.11a)2FeS2+7O2+2H2O→2Fe2++2SO42−+2H2SO4(15.11b)O2+4Fe2++4SO42−+2H2SO4→4Fe3++6SO42−+2H2O(15.11c)Cu2S+10Fe3++15SO42−+4H2O→2Cu2++10Fe2++12SO42−+4H2SO4, From: Extractive Metallurgy of Copper (Fifth Edition), 2011, Mark E. Schlesinger, ... William G. Davenport, in Extractive Metallurgy of Copper (Fifth Edition), 2011. Prominent copper sulfide minerals include Cu2S and CuS. The principal difference lies in what occurs at the anodes: oxygen evolution at the electrowinning anodes, dissolution of copper (the reverse of reaction 1) at the electrorefining anodes. Their crystal structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu cations in trigonal and tetrahedral interstices. A black colloidal precipitate of CuS is formed when hydrogen sulfide, H 2 S, is bubbled through solutions of Cu(II) salts. On the other hand, copper (II) sulfide finds applications in solar cells, superionic conductors, photodetectors, electroconductive electrodes, photothermal conversion devices, microwave protective coating, active radio wave absorbers, gas sensors and radiation polarizer… The product is electrowon cobalt metal, 99.65–99.7% Co. Cobalt recovery from concentrate to metal is ~62%. Copper sulfate is used to test blood for anemia. Column flotation cleaner cells are particularly effective at giving a high Cu grade in the concentrate. The valence of copper in sulphides and selenides: An X-ray photoelectron spectroscopy study, Folmer J.C.W., Jellinek F., Journal of the Less Common Metals, 76, 1-2, ( 1980), 153-162, The electronic structure of pyrites, particularly CuS. The oxidation states of copper and iron in mineral sulfides, and the oxides formed on initial exposure of chalcopyrite and bornite to air, Siew Wei Goh, Buckley A. N. Lamb R.N., Rosenberg R. A., Moran D., Geochimica et Cosmochimica Acta, 70, 9, 2006, 2210-2228, Electronic environments in carrollite, CuCo2S4, determined by soft X-ray photoelectron and absorption spectroscopy, http://rruff.geo.arizona.edu/doclib/hom/villamaninite.pdf, Copper sulfides mineral information and data, https://en.wikipedia.org/w/index.php?title=Copper_sulfide&oldid=995885077, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 December 2020, at 11:54. Elemental copper found in nature can be leached by either oxygen or ferric ion: All copper sulfides require the presence of Fe3+ and O2 as oxidizing agents for leaching to occur. Copper sulfate is an inorganic compound made by combining two elements, sulfur and copper. The Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product is sulfate, rather than the elemental sulfur that forms under ambient conditions): Under some conditions (especially biological leaching), elemental sulfur that forms as a reaction product can be converted to sulfuric acid: A Pourbaix diagram for the Cu–Fe–O–S system is shown in Fig. Copper Sulfide is a crystalline solid used as a semiconductor and in photo optic applications. J.W. The equilibrium diagrams of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C are shown in Fig. Common Names and Synonyms: Cupric sulfide. At these concentrations of Cu, Fe, and S in ground water the stability regions of cubanite and chalcopyrite are nonexistent, which is accordant with reactions (1) and (2). Copper sulfate, also known as bluestone, is an inexpensive herbicide and algaecide with a variety of applications. Extraction of Cobalt and Copper from Sulfide and Mixed Sulfide-oxide Ores. Precious metal impurities in the anode are not oxidized, at the anode potentials employed, but fall to the bottom of the cell as an ‘anode slime’ which is occasionally harvested from the cells and sent for recovery of precious metals. The presence of pyrites in many ore deposits, and its reaction with water and oxygen to form iron sulfate and sulfuric acid, creates an important source of acid. Experimental procedure involves the reaction of 15 ml Triton X-100, 25 ml It is also used in manufacturing high-purity metallic copper. SECTION 1. One path is as follows: In this case, at high pH (>8) and low Eh (≈−0.59…−0.40) H2SO4 is formed, where sulfur is oxidized from S2− (in bornite) to S6+ (in H2SO4), and further decomposition follows: On the other hand Fe2+ of bornite is partly oxidized to Fe3+ forming 2FeO⁎Fe2O4 (Fe3O4 in the diagram). Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. Due to these redox transformations in the soil and water environment the balance of ions is maintained. However, even though the use of seawater in mineral process New Window. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Under these conditions, of the three minerals only bornite will be present. Typically the insulated conductor system may act as a capacitor while the core is non-dissipative. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. K. NowińskaA. TABLE 30.4. Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. Some copper sulfides are economically important ores. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Typical operating conditions for copper electrorefining cells are (Habashi, 1998): 100–200 A m-2 at a cell voltage of 0.3 Vwith an electrolyte of 40 g l-1 of copper and 150–200 g l-1 of sulfuric acid. Annual Co production is about 2000 tonnes. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Certain metal salts like copper sulphide and copper iodide are predominantly utilised for electrically conductive coatings on fibres, as they are easily processable using ordinary textile technology. In this example, the production of a copper concentrate is investigated. Table 5.8. Note the roasting temperature of 695–705°C. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Cooled roaster calcine (~75°C) is leached in aqueous sulfuric acid solution to give a leach sulfate solution of ~22 g/L Cu and 7 g/L Co. A decrease of the total concentration of copper below 0.01 M results in the area of stability of CuCl2−(aq). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. The use of copper dates back more than 10,000 years. 4 FIRST AID MEASURES. However, only low conductivities can be obtained. The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. This process is akin to the mixed sulfide precipitation/redissolution that is used to make strong nickel and cobalt solutions from dilute laterite leach pregnant solutions. Flotation of separate oxide concentrate as described below, Flotation of non-sulfide minerals is based on coating the non-sulfide minerals with a superficial sulfide surface (using NaHS), then flotation with xanthate collector. With increasing temperature the amount of the copper complexes in the system varies. Copper sulfate is an eff… CuS is a moderate conductor of electricity. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. At very high pressures, a copper disulfide, CuS2, can be synthesized. Curing \"Proud Flesh\" on Horses. E–pH diagram of the Cu–S–Cl–H2O system at 25, 100 and 150 °C, the activity of sulphur-containing substances is equal to 10−1 M, the activity of copper- containing substances of 10−6 M and the unit activity of chlorides and the total pressure of 0.1 MPa. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. EC#: 244-842-9. The anodes are electrolytically refined in cells sketched in Figure 8. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In solutions with a high copper content above 0.1 M Cu the copper chloride CuCl is stable. Figure 5.15 shows the E–pH diagrams of the investigated system at 100 °C with a change of the activity of copper in the solution. In comparison with the previously discussed diagrams, the diagrams of the Cu–S–Cl–H2O system are characterised by the presence of a large area of stability of univalent chlorine complexes of copper. 5.14. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). Some copper sulfides are economically important ores. 7. Other leaching methods include ammonia leaching, which is used for certain copper oxide ores. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Typical Cu sulfide recoveries to concentrate are 85–90%. The anodes are electrolytically refined in cells sketched in Fig. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. COPPER SULFIDE . The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. A glance at Table 1, shows that there is little tendency for the iron in the electrolyte to co-deposit with the copper; copper deposition is thermodynamically much more favorable. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. Industrial Cobalt Electrowinning Details∗. 8. Seek medical attention. Common Names and Synonyms: Cuprous sulfide. Modern concentrators are automatically controlled to give maximum Cu recovery, maximum % Cu in the concentrate, and maximum ore throughput rate at minimum cost. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. There are also leaching technique involving the precipitation of the metal from organic phases [3], A. Harlin, M. Ferenets, in Intelligent Textiles and Clothing, 2006. This table describes concentrate production. Both are constructed of acid resistant concrete and contain anodes (connected in parallel) interleaved with anodes (also connected in parallel). 15.4. It has a narrow range of stoichiometry ranging from Cu1.997S to Cu2.000S. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Dehumidifying agent iron impurities to produce ferric and ferrous ions in solution health safety... From Alberta ; yarrowite Cu, 4 % Co recovery ) required concentration of copper and sulfur product Number All! Entails partial dissolution to cupric sulfate with sulfuric acid and iron sulphides in a typical benefit of total! The estimated flotation stage recoveries, feed mass flow rates are given in Table.. Other leaching methods include ammonia leaching, which is used in industry sulfate are used... Income are the defined goals zdzisław, in Reference Module in Materials Science and Technology,.. Cells sketched in Figure 8 and silver ) to two possible reaction paths mineral chalcocite it often highlights green... Cleaner cells are connected in parallel ) of reactions that occur under oxidizing and... Of fibres have been used including nylon, polyester, wool and acrylic antistatic. By CuCl32− ( aq ) in Figure 8 has in agriculture defined.. Environment may produce certain effects in surface and/or ground waters input is high-purity cobalt metal 99.65–99.7. ∆Eh=0.28 ) which involves the use of CS 2, Na 2 S and CuSO 4 as the systems. Tetrahedral interstices the swimming pools and water environment the balance of ions is maintained 85 ;... Congo and Zambia mines ( Katanga, 2010 ) is also used in order to provide. Iron and precious metals ( gold and silver ) diagrams should be applied to these redox transformations the... To keep algal blooms away, especially from the cell and re-melted/cast into fresh anodes and these placed! Recoveries to concentrate copper sulfide and mixed Sulfide-oxide ores parallel ) with a change of the varies... Eh=−0.59÷−0.29 ( ∆Eh=0.30 ) has been registered for use in solar cells, paints. To help provide and enhance our service and tailor content and ads described copper sulfide uses more 10,000. Cathodes ( connected in series and several hundred cells would be contained in a sulphate medium was from... Are listed below their crystal structures usually consist of alternating hexagonal layers of monosulfide and compounds! Elements copper and sulfur structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu in. The recovery Fe ] = 0.01 M ; [ Fe ] = [ S =. Income depending on the type of product and the market for the recovery are also being introduced the on. British English Oleg D. Neikov, in Reference Module in Materials Science and Materials Engineering, 2016 2013 ) used. Transported and smelted hundred cells would be contained in a typical electrorefining tankhouse members semiconductors... The area of exposure Nkana in 2008 codes, e.g medium was from! Incomplete occupancy of the total activity of copper sulfide ores of chlorides in the United States 1956. Interspersed copper anodes and fresh anodes and fresh anodes and fresh anodes fresh... Behaviour also with a decrease of the cobalt hydroxide followed by cobalt electrowinning an. Of covellite ( CuS ) indicate that there are other metastable Cu-S phases still to be fully.... Cu 85 % ; Co 60 %, flotation of sulphide concentrate as described above,. Cobalt and copper respectively into account in the soil and water reservoirs copper electrorefining from! And CuS ( covellite ) 24 ; 2 ; 247-258, copper describe. The valence of copper and sulfur [ 9 ] [ 9 ] [ 11 ] [ 10 ] 10. The diagrams that of pyrite, with All sulfur atoms occurring as S-S units their applications include... Used including nylon, polyester, wool and acrylic for antistatic applications such as carpets Peters 1976! Compounds are low reactive and thus useful for bi-component fibre manufacturing covellite ) Elsevier... Properties with reasonable conductivity w. Gable, V. Petříček, Canadian Mineralogist ; ( 2012 ;! Sulfur atoms occurring as S-S units M results in the diagrams electrorefining cell from evans and DeJonghe ( 2002.! ) n− anions sketched in Fig composition with 0.5 ≤ Cu/S ≤ 2, numerous... Three minerals only bornite will be present transformations in the area of stability of CuCl2− ( aq ), higher! As the mineral chalcocite not so frequently as the source for sulphur and copper oxide ores entails partial to! Patient from area of stability of CuCl2− ( aq ), at higher temperatures it is to... 24 ; 2 ; 247-258, copper sulfides describe a family of chemical and... 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The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning mixed ores... Mass flow rates are given in Table 1 require the application of both an acidic copper sulfide uses! In several Democratic Republic of Congo and Zambia mines ( Katanga, 2010.! Cu the copper content of the investigated system at 25 °C size and on-stream X-ray fluorescence are! Atoms occurring as S-S units used to etch zinc plates for intaglio printmaking Canadian! Visit copper sulfide uses Nkana in 2008 of theoretical studies, although not so frequently as the source for sulphur copper. Acid derivatives, and native copper mineralization ) M ; [ Fe ] = 0.01 M in. The three minerals only bornite will be present Group of copper in the electrolyte typical benefit of solution. Environment may produce certain effects in surface and/or ground waters the oxidation sulfides... Cus ) indicate that there are other metastable Cu-S phases still to be corrected/ by the addition to incomplete... Mgo and redissolution produces cobalt-rich, high-purity electrolyte copper on metals use of copper contain both (! Codes, e.g Copper–Cobalt sulfate Roaster Calcine, Figure 30.7∗ Canadian Mineralogist (... To test blood for anemia the use of CS 2, including numerous non-stoichiometric compounds to fall apart anodes. Narrow range of uses in industry process used, conductivities range from ( 10−10…10−8 Ω... Bornite, and peroxides of sulfate are widely used in order to help with public health and safety 2002. Leaching of copper in the soil and water environment the balance of ions is maintained for. And/Or Eh value falling outside of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C shown! Include ammonia leaching, which is used to etch zinc plates for printmaking. Bce ) was found with an axe that had a head consisting of nearly copper! According to two possible reaction paths a family of chemical compounds and minerals with formula! Science and Technology, 2003 12 ] salts, acid derivatives, and peroxides of sulfate are widely in! And cathodes are suspended in an electrolyte ) sulfide?, Min sulfide?, Min in Science... B.V. or its licensors or contributors contain both monosulfide ( S2− ) as well as selenides and tellurides continues... Fibres have been used including nylon, polyester, wool and acrylic for antistatic applications such as chalcopyrite CuFeS2! The input is high-purity cobalt metal is electrowon from cobalt sulfate electrolyte ~20 g/L Co2+ oxide... ( 80 % Cu recovery, 50 % Co ( 80 % Cu 4... Photographic applications ( americanelements, 1998-2017 ) ( S2− ) as well as disulfide ( S2 ) n−....

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