copper sulfide uses

5.15. The residuum is removed from the cell and re-melted/cast into fresh anodes and fresh anodes are placed in the cell. Details of Industrial Leaching of Copper–Cobalt Sulfate Roaster Calcine, Figure 30.7∗. Frank K. Crundwell, ... William G. Davenport, in Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, 2011. Consequently, the stability region of bornite in the summer season (25 °C) will be narrower than in the winter season, as the ranges ∆pH and ∆Eh decrease with rising temperature in the series of −5, 5 and 25 °C. Dyes - Copper sulfate can also be used as a mordant in vegetable dyeing. Most minerals require the application of both an acidic environment and an oxidizing agent to leach copper as Cu2+. The copper content of the solution varies from less than 1 g/L to several grams per liter. 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). 5.14. 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. Both are constructed of acid resistant concrete and contain cathodes (connected in parallel) interleaved with anodes (also connected in parallel). Precipitation with MgO and redissolution produces cobalt-rich, high-purity electrolyte. A typical structure is cell-core or side-by-side bi-component structure. SAFETY DATA SHEET . Evans, in Encyclopedia of Materials: Science and Technology, 2003. 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. Annual Co production is about 2000 tonnes. Recoveries from ore to concentrate: Cu 85%; Co 60%, Flotation of sulphide concentrate as described above. Some copper sulfides are economically important ores. 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. Product Name: Copper Sulfide . Their applications also include use in solar cells, luminous paints, electrodes and certain varieties of solid lubricants (Britannica, 2013). 8. Also occurring at the anodes is the oxidation of iron impurities to produce ferric and ferrous ions in solution. 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. The naturally occurring mineral binary compounds of copper and sulfur are listed below. Preparation of Advance Electrolyte for Cobalt Electrowinning∗. It is also used in manufacturing high-purity metallic copper. Copper sulfate is used to test blood for anemia. [11][12]. 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. The copper sulfate test is a visual method of determining the existence of free iron in specifically stainless steel. It is found in nature as the mineral chalcocite. 5 °C – pH=5.9÷10.3 (∆pH=4.4); Eh=−0.58÷−0,30 (∆Eh=0.28). The common route for turning copper sulfide ores into metal is high temperature oxidation of sulfides to produce an impure liquid copper that is cast into slab-like anodes. Copper /is/ essential for erythropoiesis in rats fed a milk-based diet. Some copper sulfides are economically important ores. 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. CU-FES-02-C , CU-FES-03-C , CU-FES-04-C , CU-FES-05-C CAS #: 1308-56-1 Relevant identified uses of the substance: Scientific research and development Supplier details: American Elements 10884 Weyburn Ave. Section 1: Identification . CuS is a moderate conductor of electricity. Evans, in Reference Module in Materials Science and Materials Engineering, 2016. In this example, the production of a copper concentrate is investigated. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. W. G. Mumme, R. W. Gable, V. Petříček, Canadian Mineralogist; (2012); 50; 423-430. This substance is mainly used as a pesticide in agricultural or nonagricultural practices to help eliminate bacteria, algae, roots, plants, snails and fungi. Typical Cu sulfide recoveries to concentrate are 85–90%. In contrast, recycling copper typically uses 90% less energy. 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. Copper sulfate is also used in order to help with public health and safety. Copper sulfide is a copper sulfide, a chemical compound of copper and sulfur. Copper sulfides can be classified into three groups: Monosulfides, 1.6 ≤ Cu/S ≤ 2: their crystal structures consist of isolated sulfide anions that are closely related to either hcp or fcc lattices, without any direct S-S bonds. 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. 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. Fume cupboard, Bunsen burner, retort stand, boss and clamp (steel/iron), heat-proof mat and tongs; Copper based nanoparticles have shown excellent anticancer activity as well as have been long used for radio-imaging. The blood is teste… 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. TABLE 30.2. Sulfide concentrates ~2% Co, 12% Cu, 21% S with dolomite gangue (not the concentrates in, Concentrate/water slurry, specific gravity = 1.9, 695–705°C, chosen to give soluble sulfate calcine, Sulfate calcine (90% removed from roaster offgas: 10% as bed overflow), quenched from 700°C to 75°C and sent to cobalt–copper leaching plant (90% of sulfides are oxidized to soluble sulfates rather than oxides), Open agitation leach in pachuca air-stirred leach tanks, Copper solvent extraction raffinate, ~30 g/L H, pH maintained at <1.5 by adding fresh sulfuric acid, as needed, Sulfate leach solution 7 g/L Co, 22 g/L Cu, <50 ppm solids (after settling, filtration and clarification), Undissolved calcine, sent to washing and waste disposal, Solvent extraction raffinate (~7 g/L Co) from solvent extraction (about 30% of raffinate flow, remainder back to calcine leach), Removal of copper using secondary solvent extraction with LIX 984N, Raise pH to 3.5 with limestone and quicklime, Cycle 30% of solution through Zn solvent extraction plant (using D2EHPA, Precipitation of high-purity cobalt hydroxide, Raise pH to 8.8 with quicklime to precipitate Co(OH), Soluble sulfides and entrained organic removal, Filtered solution is passed through carbon columns, Cycle 20% of solution through nickel-removal ion-exchange column, Cathodes are crushed to 0.02 m × 0.04 m flakes in roll crusher, hydrogen gas is removed by degassing under vacuum at 800–840°C in ~1 m diameter, 7 m high electric furnaces, Polishing, assaying, grading, then shipping in drums ~230 kg cobalt each. SECTION 1. Whatever their source, copper sulfides vary widely in composition with 0.5 ≤ Cu/S ≤ 2, including numerous non-stoichiometric compounds. Eng.,19', 204 (2006). The pregnant solution goes to solvent extraction to separate Cu2+ from Co2+ and eventually to copper electrowinning and cobalt electrowinning. These methods are called leach-precipitation-flotation and are applied to mixed sulfide ores. General Measures: Remove patient from area of exposure. Adjacent cells are connected in series and several hundred cells would be contained in a typical electrorefining tankhouse. The flotation is made selective by using reagents, which make the Cu-sulfide minerals water-repellant (hydrophobic) while leaving the other minerals wetted (hydrophilic). 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. Different stoichiometric compositions can be obtained by changing the redox atmosphere of the synthetic environment. 6. The input is high-purity cobalt sulfate electrolyte ~20 g/L Co2+. Its crystal structure is analogous to that of pyrite, with all sulfur atoms occurring as S-S units. The equilibrium diagrams of the Cu–S–Cl–H2O system at temperatures of 25, 100 and 150 °C are shown in Fig. The structure, however, makes the transportation of charges between the fibres limited. [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. Substances containing chlorine in the equilibrium system Cu-S-Cl-H2O. A typical benefit of the solution is markedly textile-fibre-like properties with reasonable conductivity. Copper sulfate is an inorganic compound that combines sulfur with copper that has been registered for use in the United States since 1956. It is used to keep algal blooms away, especially from the swimming pools and water reservoirs. Felipe D. Sepulveda, ... Edelmira D. Gálvez, in Computer Aided Chemical Engineering, 2012. It has the chemical compound Cu2S. Prominent copper sulfide minerals include Cu2S and CuS. 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. IDENTIFICATION. The net-smelter-return formula is used here: where I is the income per year, W is the mass flow of the concentrate, p is the fraction of metal paid, g is the mineral grade concentrate, u is the grade deduction, q is the price of metal, Rfc is the refinery change, Trc is the treatment change, and H is the number of hours per year of plant operation when the mass flows are in tons per hour. Estimated flotation stage recoveries, feed mass flow rates and global recovery goals. Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. COPPER SULFIDE . Note the sulfate roasting, the precipitation of cobalt hydroxide and the redissolution of the cobalt hydroxide followed by cobalt electrowinning. The anodes are electrolytically refined in cells sketched in Figure 8. Etching - Copper sulfate is also used to etch zinc plates for intaglio printmaking. 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. Previously, the behaviour of copper and iron sulphides in a sulphate medium was discussed from the thermodynamic viewpoint. 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. /Anemia was able to be corrected/ by the addition to the diet of ash from animal or vegetable sources. In chemistry, a "binary copper sulfide" is any binary chemical compound of the elements copper and sulfur. Sketch of a copper electrorefining cell from (Evans and DeJonghe 2002). White metal compounds are low reactive and thus useful for bi-component fibre manufacturing. 3. There is a resemblance to the cell of Figure 7. Extraction of Cobalt and Copper from Sulfide and Mixed Sulfide-oxide Ores. Sketch of a copper electrorefining cell from Evans and DeJonghe (2002). 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. Copper sulfide is a crystalline solid used as a semiconductor and in photo optic applications. This division of copper into species depends not only on temperature but also on the total activity of copper in the solution. Interspersed copper anodes and cathodes are suspended in an electrolyte. In addition, the majority of its members are semiconductors. INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Sulfide 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). 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. Copper sulfate solutions may serve as an antiseptic and as a source for depositing copper on metals. It often highlights the green tints of the specific dyes. 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. However, even though the use of seawater in mineral process EC#: 215-271-2. ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Different relations may be applied to calculate the income depending on the type of product and the market for the base metals. Studies, although not so frequently as the Me–S–H2O systems [ 72–74 ] an oxidation agent are also introduced. Copper sulfide minerals include Cu2S ( chalcocite ) and CuS ( covellite ) cells, luminous,!, such as chalcopyrite ( CuFeS2 ), give oxygen if breathing difficult. Their source, copper sulfides describe a family of chemical compounds and minerals with the formula.. Bce ) was found with an axe that had a head consisting of nearly pure copper are. Market for the recovery these redox transformations in the electrolyte undergoes decomposition according to two possible reaction paths partial to... 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