Copper sulfide is a copper sulfide, a chemical compound of copper and sulfur. Table 5.8. EC#: 244-842-9. Extraction of Cobalt and Copper from Sulfide and Mixed Sulfide-oxide Ores. 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. 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. Roasting of Cobalt–Copper Sulfide Concentrates to Soluble Sulfate Calcine. CAS#: 1317-40-4 %: 100. Sulfide concentrate: 40% Cu, 4% Co (80% Cu recovery, 50% Co recovery). The iceman's hair contained high levels of the toxin arsenic, which may indicate the man was exposed to the element during copper … Their crystal structures usually consist of alternating hexagonal layers of monosulfide and disulfide anions with Cu cations in trigonal and tetrahedral interstices. The presence of non-stoichiometric copper sulphides was not taken into account in the diagrams. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. Very refractory minerals, such as chalcopyrite, require high temperatures and pressures to enable leaching to take place at economically viable rates (Section 15.7). 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. 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. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. Typical concentrate grades are 30% Cu (higher with chalcocite, bornite, and native copper mineralization). 1. [9] NMR studies on CuS show that there are two distinct species of copper atom, one with a more metallic nature than the other. The anodes are electrolytically refined in cells sketched in Fig. New Window. Cobalt and copper are extracted in the following steps: leaching (sometimes along with additional oxide concentrate or ore); solvent extraction separation of copper from cobalt; purification of the cobalt-rich raffinate; A flowsheet for a typical process is given in Figure 30.7 and operating details are given in Tables 30.2–30.6. 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. It is found in nature as the mineral chalcocite. Copper Sulfide is a crystalline solid used as a semiconductor and in photo optic applications. Ingredient: Copper (I) Sulfide. 5.15. 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. EC#: 215-271-2. 4 FIRST AID MEASURES. Figure 8. 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. The product is electrowon cobalt metal, 99.65–99.7% Co. Cobalt recovery from concentrate to metal is ~62%. Cobalt–copper sulfide ores are being exploited in several Democratic Republic of Congo and Zambia mines (Katanga, 2010). Under these conditions, of the three minerals only bornite will be present. In chemistry, a "binary copper sulfide" is any binary chemical compound of the elements copper and sulfur. Column flotation cleaner cells are particularly effective at giving a high Cu grade in the concentrate. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Mixed monosulfide and disulfide compounds of copper contain both monosulfide (S2−) as well as disulfide (S2)n− anions. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. 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. Product Name: Copper Sulfide . 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. 4 FIRST AID MEASURES. uses copper sulfide, Find Quality uses copper sulfide and Buy uses copper sulfide from Reliable Global uses copper sulfide Suppliers from mobile site on m.alibaba.com 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). Frank K. Crundwell, ... William G. Davenport, in Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, 2011. Structural and compositional changes in copper sulfide during leaching and dissolution, Whiteside L.S, Goble R.J, The Canadian Mineralogist; (1986);. Leaching systems using copper chloride as an oxidation agent are also being introduced. Its crystal structure is analogous to that of pyrite, with all sulfur atoms occurring as S-S units. Figure 8. The blood is teste… Copper sulfate CuSO 4 found its application in various fields of human activity. In the mining industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulfides, are often referred to as … The residuum is removed from the cell and re-melted/cast into fresh anodes and these are placed in the cell. The system considers the reactions between the potentially existing phases of the Cu–S–H2O system (equations 5.185–5.208) and ions and substances containing chlorine, Table 5.8. Interspersed copper anodes and cathodes are suspended in an electrolyte. Table 1. 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. The copper content of the solution varies from less than 1 g/L to several grams per liter. The system shows this behaviour also with a decrease of the total concentration of chlorides in the solution. The flotation is made selective by using reagents, which make the Cu-sulfide minerals water-repellant (hydrophobic) while leaving the other minerals wetted (hydrophilic). 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. Copper sulfate is used in the preparation of Paris green, to kill mosquito larvae that cause malaria. Sulfide The universal technique for this concentration is froth flotation of finely ground ore. Froth flotation entails attaching fine Cu-sulfide mineral particles to bubbles and floating them out of a water–ore mixture. Treatment of copper deficiency 5. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. In Chile, Las Luces plant has been using sweater for their operations since 1994 [9], and more recently Esperanza mine from Antofagasta Minerals [10]. 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). Also occurring at the anodes is the oxidation of iron impurities to produce ferric and ferrous ions in solution. In dump leaching, the pH of the solution is maintained between 1.5 and 3.0, partly to preserve bacteria that promote and accelerate the oxidation of purity and copper sulfate minerals and also to prevent hydrolysis of iron salts. 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. 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. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Their applications also include use in solar cells, luminous paints, electrodes and certain varieties of solid lubricants (Britannica, 2013). Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Conductivities range from (10−10…10−8 [Ω cm]−1) with nylon and polyester. 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. The activity of copper-containing substances in the solution is 10−3 M and the activity of sulphur-containing substances is equal to 10−1 M at a total pressure of 0.1 MPa. Most of us realize that mining sulfide ores to source copper threatens clean water and public health. Section 1: Identification . Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. In contrast, recycling copper typically uses 90% less energy. The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. Common Names and Synonyms: Cuprous sulfide. Species diagrams should be applied to these purposes, as discussed later. After mineralogical examination, we decided to divide the ore into four species for characterization: Cp (100% CuFeS 2 ), CpPy (95% CuFeS 2 - 5% FeS 2 ), PyAs (70% FeS 2 - 30% AsFeS), and Sc (100% SiO2). Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. SAFETY DATA SHEET . [7]) give the mixed valence formula (Cu+)2(Cu2+)(S2−)(S2)2− for CuS, X-ray photoelectron spectroscopic data give strong evidence that, in terms of the simple oxidation state formalism, all the known copper sulfides should be considered as purely monovalent copper compounds, and more appropriate formulae would be (Cu+)3(S2−)(S2)− for CuS, and (Cu+)(S2)− for CuS2, respectively. 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