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
قرأ أكثر
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
قرأ أكثر
Many massive sulfide deposits have been discovered in the Upper Paleozoic rift-related volcaniclastic sequence in South China, among which the Yushui copper …Web
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
Copper sulfide (Cu 2−x S) is a kind of cation deficient transition metal sulfide, which has attracted great interest due to its unique properties that arise from degenerate vacancy-doping, particularly its tunable localized surface plasmon resonance (LSPR) properties. In this work, a range of vacancy-doped Cu 2−x S nanocrystals (NCs) (Cu 1.2 S, Cu 1.4 S, …Web
قرأ أكثر
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
قرأ أكثر
China's copper deposits are mainly divided into porphyry-type (41%), skarn-type (27%), marine volcanic-type (9.24%), copper-nickel (Cu-Ni) sulfide-type (5.67%) and others (17.09%) . For complex reasons, the majority of the condition of conventional surface and underground mining for copper minerals in China are not very suitable, unlike South ...Web
قرأ أكثر
Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. …Web
قرأ أكثر
In this study, we report a smart and green strategy to synthesize copper sulfide nanoparticles (CuS-NPs) for clinically translatable cancer treatment. For the first time, the …Web
قرأ أكثر
Copper(II) chloride (CuCl 2 ·2H 2 O), sodium sulfide (Na 2 S·9H 2 O), Trisodium citrate (C 6 H 5 Na 3 O 7 ·2H 2 O), NaCl, Sodium dodecyl sulfate (SDS) were obtained from Sinopharm Chemical ...Web
قرأ أكثر
Corrosion of copper involves wet chemistry, even when it comes to corrosive gases. These gases dissolve in water and then act as acids. Hydrogen sulfide (H 2 S), sulfur dioxide (SO 2) or nitrogen oxide (NO x) are transformed to the corresponding acids: hydrogen sulfide acid, sulfuric acid and nitrous acid.The most important prerequisite is …Web
قرأ أكثر
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
قرأ أكثر
A time-saving procedure for boosting the performance of experimental thermoelectric energy harvesters has been developed by a team in China. Recently, copper sulfide (CuS) and copper selenide ...Web
قرأ أكثر
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
قرأ أكثر
In recent years, sulphide deposits have been found in transformer failures in China Southern Power Grid, East China and North China for many times [10 – 12]. According to statistics, in a general survey on 201 transformer insulating oils of 500 kV voltage classes by Guangdong Power Grid Company, it is found that 29 of them …Web
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
Most copper mines in China are sulphide ores which are not suitable for the hydrometallurgical process. Therefore, more than 95% of copper is produced by the pyrometallurgical process. Every 1 ton of copper produced in the smelting process is accompanied by an average of 2–3 tons of copper slag . Copper sulfide concentrate …Web
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
The Tiegelongnan porphyry-epithermal deposit (2089 Mt @ 0.53% Cu, 0.08 g/t Au) is host to a large variety of Cu-sulfide minerals, mainly chalcopyrite, bornite, covellite, digenite, enargite, and tennantite. We used LA-ICP-MS to investigate the trace element geochemistry of the Tiegelongnan Cu-sulfides, as well as pyrite, to understand …Web
قرأ أكثر
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
قرأ أكثر
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
قرأ أكثر
Magmatic nickel-copper sulfide deposits are generated by the accumulation of an immiscible sulfide liquid which is segregated from a host silicate melt [1,2,3].Most magmatic Ni-Cu-(PGE) sulfide deposits were formed in magma conduit systems, such as the Voisey's Bay deposit in Canada [4,5,6], the Eagle deposit in USA [7,8], and the …Web
قرأ أكثر
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
قرأ أكثر
Copper antimony sulfide (CuSbS 2) 10, copper antimony selenide sulfide (CuSbSe x S 2−x) 11 and copper germanium selenide (Cu 2 GeSe 3) 12 have recently been investigated as both nanoflakes and ...Web
قرأ أكثر
China Copper Sulfide manufacturers - Select 2023 high quality Copper Sulfide products in best price from certified Chinese Copper Additives, Acid Copper Powder suppliers, …Web
قرأ أكثر
