The nature of the copper sulfide film grown on copper …
oxygen in the sulfide solution, the oxidation of Cu to copper sulfide would still be the predominant process, as copper sulfide is more stable in a sulfide solution than copper oxide, based on thermodynamic data ( ΔG°=−101.46kJ/mol for the conversion from Cu 2OtoCu 2Sinsulfidesolutionsat 298K[7]: Cu O(s) + SH (aq) Cu S(s) + OH (aq)→ 2 − ...
Fluid evolution, metal source, and ore genesis of …
The sulfide mineralization is hosted within the carbonaceous phyllite and banded impure marble of the Paleoproterozoic sequence of the Delhi Supergroup but …
copper sulphide
copper sulphide. Formula: CuS. Molecular weight: 95.611. IUPAC Standard InChI: InChI=1S/Cu.S. Copy Sheet of paper on top of another sheet. IUPAC Standard InChIKey: BWFPGXWASODCHM-UHFFFAOYSA-N. Copy Sheet of paper on top of another sheet. CAS Registry Number: . Chemical structure:
12.3 Primary Copper Smelting
Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining.
Copper Sulfide
Copper Sulfide. Definition. Copper sulfide is a crystalline solid used as a semiconductor and in photo optic applications. 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
Some zinc and lead-zinc-copper sulfide ores are readily available sources of germanium, but there is no widely occurring germanium ore. The concentration of germanium in the earth's crust ranges between 1.5 and 7 ppm (Scansetti, 1992). The total estimated world production of germanium was approximately 114,000 kg in 1982, but this does not ...
Metasomatized mantle facilitates the genesis of magmatic nickel–copper
The Huangshandong intrusion comprises a massive unit and a layered unit (Fig. 2 a, Gao et al., 2013).The massive unit is dominantly made up of gabbronorite, whereas the layered unit is mainly composed of lherzolite, olivine gabbro, hornblende gabbro, and gabbrodiorite (Fig. 3).Sulfide mineralization occurs in the basal portion of …
Efficient elimination of multidrug-resistant bacteria using copper …
Antibacterial nanomaterials have attracted growing interest for bacterial infection therapy. However, most nanomaterials eliminate bacteria either physically or chemically, which hampers their efficacy when dealing with multidrug-resistant bacteria. To overcome this, we integrated copper sulfide (CuS) nanoparticles with active graphene …
Surface Structure to Tailor the Electrochemical Behavior of …
Copper exists as a variety of sulfides, and the most common stoichiometric sulfide is chalcocite Cu 2 S. However, copper also forms a number of non-stoichiometric sulfides such as digenite (Cu 9 S 5), anilite (Cu 7 S 4), and yarrowite (Cu 9 S 8), and copper exists in mixed-valence states, namely, as Cu I and Cu II. Although the sulfide …
Copper sulfide
Known copper sulfides. The naturally occurring mineral binary compounds of copper and sulfur are listed below. Investigations of covellite indicate that there are other metastable Cu-S phases still to be fully characterised. [1] CuS 2, villamaninite [2] or (Cu,Ni,Co,Fe)S 2 [3]; CuS, covellite, [2] copper monosulfide Cu 9 S 8 (Cu 1.12 S), …
COPPER(I) SULFIDE | 2
Copper (I) sulfide, Cu2S, [2], MW 159.15, is naturally occurring as the blue or gray mineral chalcocite, [2]. Copper (I) sulfide or copper glance is insoluble in water but decomposes in nitric acid and concentrated sulfuric acid. Copper (I) sulfide is prepared by heating mixtures of copper and sulfur in a hydrogen atmosphere ...
Fluid evolution, metal source, and ore genesis of sulfide
Nim Ka Thana Copper Belt, in Rajasthan, India is well-known for the bornite dominated copper deposits. The present study area covers three prospects, i.e., Nanagwas, Dariba North, and Toda-Ramliyas, located in the central to the southern part of the belt. The sulfide mineralization is hosted within the carbonaceous phyllite and …
Performance of Copper Sulfide Hollow Rods in a
The concentration of sodium thiosulphate has a strong impact on the preparation of copper sulfide because it acts as a reducing agent which leads to the oxidation of copper from Cu 2+ to Cu 1+.Thus, the impact of Na 2 S 2 O 3 ·5H 2 O on the properties of copper sulphide has been studied. The ratio of copper sulphate and …
EXTRACTING METALS FROM SULFIDE ORES
Mixed oxide and sulfide copper ores are leached following the same process stages as in Figure 4. Also, some sulfidic ores that are too lean to treat by flotation are also leached in heaps or dumps. ... Bacterial leaching is being developed to operate much more effectively than that occurring naturally. Effective bacteria in sulfide leaching ...
Oxidation of Copper Sulfides and Secondary Sulfide …
Secondary copper sulfide enrichment is widely accepted today as resulting from oxidation of copper sulfide minerals, downward migration of soluble copper sulfates, and precipitation as copper sulfide by reaction with primary sulfide minerals. Chalcopyrite is replaced preferentially to pyrite. Examples of sulfide enrichment above the water table ...
(PDF) Leaching of Copper Sulphides
Three copper sulphide leaching and refining processes are d iscussed: total. pressure oxidation, ferric sulphate leaching and copper chloride leaching. Ferric sulphate leaching and. copper ch ...
Exploring Copper Oxide and Copper Sulfide for Non …
The material also provided aid to the redox reaction occurring on the surface of the electrode, which may be due to the lone pair of electrons present in the N and S atoms. 4.3.3. CuS-Based Mixed Metal Oxides . ... Mallick and co-workers reported on a copper sulfide (Cu 2 S)-based non-enzymatic glucose sensor with a detection limit of …
Copper Ore Types: Sulfides vs. Oxides
Copper-containing rock, or copper ore, holds only a small percentage of copper. Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore that ...
copper (Cu)
It is formed by oxidation of copper sulfide ores and so is commonly found near the surface. Cuprite is found in Europe, Australia, Arizona, southwest Africa, and South America. Hardness 3.5–4; relative density 6.1. ... Copper poisoning is rare, occurring mainly in people who drink home-made alcohol distilled using copper tubing. Symptoms of ...
Tomography shows high potential of copper …
3D reconstruction of the formation of a copper crystallite in a copper sulfide particle (CuS) during the discharge of a lithium CuS solid-state battery. ... The team led by Prof. Philipp Adelhelm and Dr. Ingo …
Recent progress in copper sulfide based nanomaterials for …
Copper sulfides (Cu x S, x = 1–2), have been recognized as industrially significant materials with diverse applications in exotic technological fields of electronics, sensors, catalysis, photovoltaics, energy storage, etc. Their promising electrochemical performance, ease of availability, and low production cost have motivated enormous …
Copper Sulfide
Copper Sulfide. Copper sulfides (and native copper) are leached by Fe3+, also assisted by direct bacterial action:(14.11a)2FeS2+7O2+2H2O→2Fe2++2SO42−+2H2SO4(14.11b)O2+4Fe2++4SO42−+2H2SO4→4Fe3++6SO42−+2H2O(14.11c)Cu2S+10Fe3++15SO42−+4H2O→2Cu2++10Fe2++12SO42−+4H2SO4. …
Cadmium sulfide/copper ternary heterojunction cell …
Technical Report: Cadmium sulfide/copper ternary heterojunction cell research. Second quarterly technical progress report, June 1-August 31, 1979 ... Rapid diffusion processes occurring at the high substrate temperatures are described as precluding the use of thick selenide layers highly deficient in In as part of the cell structure. Growth of ...
Sulfide Mineralogy and Geochemistry
Volume 61: Sulfide Mineralogy and GeochemistryDavid J. Vaughan, editor. 2006 i-xiii + 714 pages. ISBN 0-93; ISBN13 978-0-93. The importance of sulfide minerals in ores has long been, and continues …
Copper | Uses, Properties, & Facts | Britannica
Copper also forms an important series of alloys with aluminum, called aluminum bronzes. Beryllium copper (2 percent Be) is an unusual copper alloy in that it can be hardened by heat treatment. Copper is a part of many coinage metals. Long after the Bronze Age passed into the Iron Age, copper remained the metal second in use and …
Dissolution kinetics and solubilities of copper
In porphyry copper deposits, the sulfide mineralogy is composed of hypogene and supergene sulfides; the former represented by a variety of primary minerals, such as chalcopyrite and pyrite; the latter occurring as a replacement of primary sulfides throughout the supergene enrichment zone, usually in the form of secondary chalcocite …
Copper sulfide nanostructures: synthesis and …
Abstract. Over the past few years, considerable attention has been paid to biomedical applications of copper sulfide nanostructures owing to their enhanced physiochemical and pharmacokinetics characteristics in …
[PDF] Cadmium sulfide/copper ternary heterojunction cell …
Rapid diffusion processes occurring at the high substrate temperatures are described as precluding the use of thick selenide layers highly deficient in In as part of the cell structure. Growth of cell degrading copper nodules in low resistivity, P-type CuInSe/sub 2/ films exposed to CdS is discussed. ... Cadmium sulfide/copper ternary ...
The nature of the copper sulfide film grown on copper in …
Despite the possible presence of trace amounts of dissolved oxygen in the sulfide solution, the oxidation of Cu to copper sulfide would still be the predominant process, as copper sulfide is more stable in a sulfide solution than copper oxide, based on thermodynamic data (ΔG° = −101.46 kJ/mol for the conversion from Cu2O to Cu2S in sulfide ...
Copper Ore Types: Sulfides vs. Oxides
Copper sulfide ores are typically the most profitable copper ore type to mine. That is because they have high copper content, and the copper in them can more …
