Good thermoelectric performance and stability in copper sulfide
We investigate the thermoelectric performance and the stability of polycrystalline p-type Cu2−xS fabricated by hydrothermal method and hot-pressing technique. The relative pure copper sulfides are obtained via the sintering process and their crystal structures are dependence on the atomic ratio of Cu/S. The thermoelectric …Web
اقرأ أكثرProgress in bioleaching: part B, applications of microbial
Abstract This review provides an update to the last mini-review with the same title pertaining to recent developments in bioleaching and biooxidation published in 2013 (Brierley and Brierley). In the intervening almost 10 years, microbial processes for sulfide minerals have seen increased acceptance and ongoing but also declining …Web
اقرأ أكثرCopper Sulfide
China Copper Sulfide manufacturers - Select 2023 high quality Copper Sulfide products in best price from certified Chinese Copper Additives, Acid Copper Powder suppliers, …Web
اقرأ أكثرFrontiers | Temperature Controlled Evolution of Pure Phase …
Copper sulphides are one of the most explored semiconductor metal sulphides because of their stoichiometric and morphological dependent optical and electrical properties, which makes them tunable for numerous optoelectronic applications. Stoichiometrically, copper sulphides exist in numerous structures which varies from the copper-rich phase (Cu2S) …Web
اقرأ أكثرMagmatic Sulfide-Rich Nickel-Copper Deposits Related to …
Mamatic sulfide-rich nickel-copper deposits related to picrite and (or) tholeiitic basalt dike-sill complexes —A ... Jinchuan (China), Pechenga (Russia), Voisey's Bay (Canada), and Kabanga (Tanzania) (fig. 1). In the United States, this deposit type is represented by the Eagle deposit in northern Michigan, currently underWeb
اقرأ أكثرCopper( i ) sulfide: a two-dimensional semiconductor …
Herein, we show theoretical evidence of a new phase of a copper(I) sulfide (Cu 2 S) monolayer, denoted δ-Cu 2 S, with both novel electronic properties and superior oxidation resistance. We find that both monolayer and …Web
اقرأ أكثرEfficient degradation of sulfamethoxazole under visible light
A novel composite photocatalyst polyaniline/copper sulfide (PANI/CuS) was successfully prepared using an in situ precipitation method. The surface morphology, internal structure, thermal stability, electronegativity, and visible light photocatalytic activity of PANI/CuS were analyzed by a series of characterization methods. Sulfamethoxazole …Web
اقرأ أكثرIndustrial Heap Bioleaching of Copper Sulfide Ore Started with …
The Monywa copper mine is located in Myanmar (22°07′ N, 95°02′ E) and is one of the largest secondary copper-sulfide mines in Asia [13,14]. The newly operated Letpadaung ore body has an ore reserve of over 1.5 billion tonnes, with an average copper grade of about 0.34%, and a geological reserve of metal copper of over 5 million tonnes.Web
اقرأ أكثرMolecules | Free Full-Text | The Effect of Copper …
In this work, CuS, Cu7S4, Cu9S5, Cu7.2S4, and Cu2S with the same morphology were successfully synthesized by the hydrothermal method. According to the calculation, their galvanostatic charge …Web
اقرأ أكثرCopper recovery from low-grade copper sulfides using …
As the largest copper consumer all over the world, China accounts for 55% of the global copper consumption (Elshkaki et al., 2016; ... Low grade copper sulfide ores are obtained from a copper mine, Fujian Province, China, which contain 0.04% free copper oxide, 0.06% primary copper sulfide, 0.64% secondary copper sulfide and 0.01% combined ...Web
اقرأ أكثرThe shallow marine VMS copper deposit of Yushui, Eastern
Many massive sulfide deposits have been discovered in the Upper Paleozoic rift-related volcaniclastic sequence in South China, among which the Yushui copper …Web
اقرأ أكثرEnhancing flotation separation of chalcopyrite and magnesium
The Copper-Nickel Sulfide Ores used in this study were obtained from Xinjiang, China. The contents of these samples were 96.23% for chalcopyrite, 90.59% for serpentine and 94.44% for talc ...Web
اقرأ أكثرRecovery of high-grade copper concentrate from sulfur-rich …
The authors acknowledge financial support from the National Natural Science Foundation of China (51774328 and 51404300), and the National 111 Project of China (B14034). Recommended articles. ... Complex siliciclastic copper sulfide ores and ultramafic rocky copper-nickel sulfide ores often contain large amounts of Mg-bearing …Web
اقرأ أكثرChemical Composition Data of the Main Stages of Copper
Copper is found in nature mainly in the form of sulfide and oxide minerals, and the main copper mines are present in Chile, Australia, Peru, China, the USA, and Mexico . In Chile, the world's largest copper producer, most of the copper is obtained from sulfide ores [ 5, 6 ].Web
اقرأ أكثرCopper Sulfide
2.1.1 Crystal structure of copper sulfides. Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1 ]. The major copper sulfide ores contain chalcopyrite (CuFeS 2 5 4 2 S). The concentrates of copper from sulfides ores are generally performed by flotation and then processed by ...Web
اقرأ أكثرCopper Statistics and Information | U.S. Geological Survey
Copper is usually found in nature in association with sulfur. Pure copper metal is generally produced from a multistage process, beginning with the mining and concentrating of low-grade ores containing copper sulfide minerals, and followed by smelting and electrolytic refining to produce a pure copper cathode.Web
اقرأ أكثرICSG Factbook 2020
The ICSG Factbook 2020 is a comprehensive source of data and information on the global copper industry, covering production, consumption, trade, stocks, prices and forecasts. The report also provides insights into the environmental, social and economic benefits of copper and its applications. Download the PDF to learn more about the current and future trends …Web
اقرأ أكثرBioleaching of copper sulfides using mixed microorganisms and …
The bacterial diversity and dynamics in the leaching solution were analyzed during bioleaching of low-grade copper sulfide ore in the presence of seawater in this study. The results indicated a promoting response of appropriate-proportion seawater to bioleaching with improved copper recoveries. ... Beijing 100083, China; School of Civil and ...Web
اقرأ أكثرQuaternized chitosan-stabilized copper sulfide nanoparticles for …
In this study, we report a smart and green strategy to synthesize copper sulfide nanoparticles (CuS-NPs) for clinically translatable cancer treatment. ... Nanjing, Jiangsu, 138 Xinlin Road, 210023, PR China; Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine Prevention and Treatment of Tumor, Nanjing University of Chinese ...Web
اقرأ أكثرCopper isotope evidence for sulfide fractionation and lower crustal
The δ 65 Cu data for granulite xenoliths from Hannuoba in the North China craton are not plotted because these rocks suffered strong oxidative sulfide breakdown and associated Cu mobilization . All data for arc basalts and andesites, including high-Mg andesites are from ( 16, 27, 28, 79 ).Web
اقرأ أكثرHighly enhanced stability and thermoelectric performance of copper
The power factor (PF) of copper sulfide-based composites as a function of temperature is shown in Fig. 4 f. The PF is improved at low to mid temperatures for copper sulfide with an increasing boron content, which slightly reduces at 773 K since partial carriers tend to be distributed gently and contribute less to the resonance level [59].Web
اقرأ أكثرMinerals | Free Full-Text | Selective Recovery of Copper from …
A new kind of sulfide precipitant, namely, slow release sulfide precipitant (SRSP), was developed and prepared first to realize the selective recovery of copper from an acid leaching solution. The experimental results indicated that SRSP as a precipitant could selectively and efficiently recover copper and the high purity of copper sulfide …Web
اقرأ أكثرLeaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use …
The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …Web
اقرأ أكثرCopper(i) sulfide: a two-dimensional semiconductor with superior
Herein, we show theoretical evidence of a new phase of a copper(I) sulfide (Cu 2 S) monolayer, denoted δ-Cu 2 S, with both novel electronic properties and superior oxidation resistance. We find that both monolayer and bilayer δ-Cu 2 S have much lower formation energy than the known β-Cu 2 S phase.Web
اقرأ أكثرA Review of the Cyanidation Treatment of Copper-Gold Ores and …
The copper and silver that form cyanide complexes during the gold cyanidation can cause issues during the activated carbon adsorption, for example, by competing with the gold to be adsorbed, therefore requiring a higher free cyanide concentration . In addition, the mineralogy consists of copper sulfide minerals, as …Web
اقرأ أكثرCharacterizations of heavy metal contamination
Presently, the largest open-pit copper mine in China is Dexing Copper Mine, which locates in Jiangxi province. This copper mine has been operational for over 30 years and was regarded as a site of catastrophic releases of metals into the surroundings (Song et al., 2016). ... Metal recovery from the copper sulfide tailing with leaching and ...Web
اقرأ أكثرFlotation of copper oxide minerals: A review
1. Introduction. The continuous development of the global economy has resulted in a high demand for copper production and high copper consumption [1], [2], and exploitation and effective use of copper oxide mineral resources have attracted attention [3].Copper oxide deposits evolve from shallow copper sulfide deposits after long-term …Web
اقرأ أكثرEffect of oxygen and sodium sulfide on flotation of cuprite and its
The reason why the O content at Position 1 was higher than that at Position Xiao-dong JIA, et al/Trans. Nonferrous Met. Soc. China 33(2023) 1233âˆ'1243 1239 Fig. 7 EPMA mappings of pure cuprite (a) and cuprite treated with 5.0×10âˆ'4 mol/L Na2S (b) 2 was that the copper sulfide species at Position 1 exhibited oxidation behavior, e.g ...Web
اقرأ أكثرCopper Production: How Is Copper Made?
The remaining mixture is a molten copper sulfide referred to as matte. The next step in the refining process is to oxidize liquid matte in order to remove iron to burn off sulfide content as sulfur dioxide. The result is 97-99%, blister copper. The term blister copper comes from the bubbles produced by sulfur dioxide on the surface of the copper.Web
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