Send a Message

Contact Us

Company Address

Zhengzhou, China.

A NEW TYPE OF COPPER SULFIDE DEPOSIT FOUND IN

copper sulfide deposits and where in the transformer they might be found. Remove as much of the yellow material as possible through wiping, vacuuming and flushing with oil.

Transport mechanism of copper sulfide embedded

In the copper sulfide system, sulphur has a higher diffusion coefficient than copper, which results the formation of nonstoichiometric Cu 2− x S structure. 28,29 In the XRD pattern, the most intense peak can be indexed as the interlayer spacing of the stacked aromatic segments in the (002) planes with a distance of 0.324 nm of the conjugated

In vitro and in vivo toxicity studies of copper sulfide

2015-5-1  Copper sulfide (CuS) has emerged as a promising photothermal agent. However, its potential toxic effects still remained poorly understood. Herein, CuS nanoplates were synthesized for toxicity assessment. The in vitro study indicated that the cell viability decreased when CuS nanoplate concentration was higher than 100 μg/mL. CuS nanoplates caused apparent toxicity to HUVEC and

Copper Sulfide Precipitation by Yeasts from Acid Mine

It occurred whether or not copper was presentinthemedium. Someofthe sulfur particles in flasks in which copper was precipitated developed a blackish copper sulfide precipitated from a medium con-taining 180 ug ofdissolved copper per ml (Table 3). It is noteworthy that the presence of iron

Structural and Electrical Properties of Copper Sulfide

2001-3-1  Copper sulfide is a p-type semiconducting material which belongs to I-VI compound semiconductor metals. Chalcogenide thin films of copper sulfide have received particular attention since the discovery of the CdS/CuS hetrojunction solar cell in 1954 [1]. Other applications of CuS thin films include laminated glazing,

Copper tungsten sulfide anchored on Ni-foam as a

2019-3-1  Copper tungsten sulfide (CWS) is one of the layered ternary transition metal sulfides possesses high electrical conductivity with wide band gap which makes them a suitable for electrocatalytic hydrogen evolution reaction, visible-light driven

The oxidation of copper sulfide minerals during

2012-11-1  The surface of copper sulfide minerals starts to oxidize as soon as they are in contact with air. Mild oxidation results in a surface that is rich in hydrophobic polysulfides with some metal hydroxides present at the surface, due to the dissolution of metal ions from the surface and near surface layers, as observed in ambient air, acidic and alkaline conditions by X-ray Photoelectron Spectroscopy (XPS)

Copper Sulfide Mining Earthworks

Many of the currently operating copper sulfide mines are located in the arid southwest, where precipitation is limited, and communication between surface and groundwater resources is limited. More significant impacts could be expected at mines in wetter climates, with abundant surface water and shallow groundwater.

Insights into mineralogical characteristics of typical

This research reveals the occurrence mechanism of copper minerals in a typical copper sulfide tailing using quantitative mineral liberation analysis (MLA) integrated with scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS).

Copper sulfide nanoparticles as a photothermal switch

2018-1-15  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)

(PDF) Copper Sulfide Remobilization and

Sulfide Pb-Pb dating indicates that copper mineralization occurred at 1960+46/−58 Ma, younger than the zircon U-Pb age of the host metatuff (2180 Ma to 2190 Ma), but close to the timing of

Identification of affecting factors of copper sulfide

Abstract: Effects of oil brand, temperature and atmosphere conditions on copper sulfide deposition on insulating paper were investigated by thermal aging test. Copper sulfide deposition occurred in a certain oil brand and dibenzyl disulfide (DBDS) was found in the oil. There was an incubation period observed before copper sulfide deposition occurred.

Copper Sulfide Nanodisk-Doped Solid–Solid Phase

2021-1-13  Phase change materials (PCMs) provide a state-of-the-art thermal energy storage capability and offer enormous potential for solar energy storage systems. However, the widespread adaptation of PCMs in advanced energy systems is often limited by low energy harvesting efficiency and poor shape stability. Thus, developing shape-stable PCMs for high-efficiency solar-thermal energy storage has

Two-Dimensional and Subnanometer-Thin Quasi

2021-1-27  Ultrathin two-dimensional (2D) semiconductors exhibit outstanding properties, but it remains challenging to obtain monolayer-structured inorganic semiconductors naturally occurring as nonlayered crystals. Copper sulfides are a class of widely studied nonlayered metal chalcogenide semiconductors. Although 2D copper sulfides can provide extraordinary physical and chemical applications

Geology and mineralogy of some copper sulfide

At least some of the faulting is related to regional deformation thought to have occurred in late Upper Keweenawan time. Regionally, native copper deposition is also believed to have followed this period of deformation and preceded copper sulfide mineralizationMicroscopic studies, supplemented by X-ray fluorescence analyses, have defined a

The Copper Sulfide Coating on Polyacrylonitrile with

And then, the anchoring effect occurred due to the hydrogen bonding between the pits of PAN substrate and the chelating agent. Consequently, the copper sulfide layer deposited by the electroless plating reaction with EDTA and TEA. The swelling degree (S d ) was proposed and evaluated from the

Geological and Geophysical Studies of Sulfide Copper

Copper and sulfide‐rich hydrothermal fluid have flowed upward through the local faults and permeable interbeds within the Eocene volcanic sequence and have formed the mineralized veins and horizons. The geophysical results have detected the local faults as the channel ways for mineralization.

Copper sulfide nanoparticles as a photothermal switch

2018-1-15  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

Copper sulfide nanoparticle-carrageenan films for

2020-12-1  2. Materials and methods2.1. Materials. Copper(II) chloride dihydrate (CuCl 2 ·2H 2 O) and sodium citrate dihydrate (Na 3 C 6 H 5 O 7 ·2H 2 O) were purchased from Guanghua Technology Co., Ltd. (Guangdong, China). Sodium sulfide nonahydrate (Na 2 S·9H 2 O) and glycerol were obtained from Kelong Chemical Reagent Factory (Chengdu, China). Kappa-carrageenan (reagent grade) was

(DOC) PostLab Stoichiometry II Which Copper

3. If all the copper did not react with sulfur, the weight of the product would be greater. The copper would react with the oxygen to form copper (II) oxide, a solid. 4. a. If part of the copper reacts with oxygen to Cu20, which has a smaller molar mass than CuS or Cu2S, the copper sulfide products will weigh less.

Structural and Electrical Properties of Copper Sulfide

2001-3-1  Copper sulfide is a p-type semiconducting material which belongs to I-VI compound semiconductor metals. Chalcogenide thin films of copper sulfide have received particular attention since the discovery of the CdS/CuS hetrojunction solar cell in 1954 [1]. Other applications of CuS thin films include laminated glazing,

Copper Sulfide Nanodisk-Doped Solid–Solid Phase

2021-1-13  Phase change materials (PCMs) provide a state-of-the-art thermal energy storage capability and offer enormous potential for solar energy storage systems. However, the widespread adaptation of PCMs in advanced energy systems is often limited by low energy harvesting efficiency and poor shape stability. Thus, developing shape-stable PCMs for high-efficiency solar-thermal energy storage has

Copper Sulfide Contamination Resulting in the Failure of

2020-12-13  INVESTIGATING COPPER SULFIDE CONTAMINATION IN A FAILED LARGE GSU TRANSFORMER Lance Lewand, Doble Engineering Company visual inspection of the Bucholtz relay mounted on the transformer did indicate a major event occurred in that the relay was half filled with gas (Figure 3) which in service should be completely filled with oil.

Copper sulfide nanoparticles as a photothermal switch

2018-1-15  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

COPPER SULFIDE MINING Earthworks

impoundment occurred at four out of fourteen mines (28%). Many of the currently operating copper sulfide mines are located in the arid southwest, where precipitation is limited, and communication between surface and groundwater resources is limited. More significant impacts could be

Geology and mineralogy of some copper sulfide

At least some of the faulting is related to regional deformation thought to have occurred in late Upper Keweenawan time. Regionally, native copper deposition is also believed to have followed this period of deformation and preceded copper sulfide mineralizationMicroscopic studies, supplemented by X-ray fluorescence analyses, have defined a

Copper Sulfide Mining Threatens the Boundary

Copper sulfide mining extracts sulfide ores which contain metals that are bonded to the sulfur. The process breaks apart the ore, exposing it to air and water, then soaks it in chemicals to release copper and other minerals. A small percentage of the ore is actually metal, most of it is sulfide that turns to sulfuric acid in the process.

Geological and Geophysical Studies of Sulfide Copper

Copper and sulfide‐rich hydrothermal fluid have flowed upward through the local faults and permeable interbeds within the Eocene volcanic sequence and have formed the mineralized veins and horizons. The geophysical results have detected the local faults as the channel ways for mineralization.

The Copper Sulfide Coating on Polyacrylonitrile with

And then, the anchoring effect occurred due to the hydrogen bonding between the pits of PAN substrate and the chelating agent. Consequently, the copper sulfide layer deposited by the electroless plating reaction with EDTA and TEA. The swelling degree (S d ) was proposed and evaluated from the

(DOC) PostLab Stoichiometry II Which Copper

3. If all the copper did not react with sulfur, the weight of the product would be greater. The copper would react with the oxygen to form copper (II) oxide, a solid. 4. a. If part of the copper reacts with oxygen to Cu20, which has a smaller molar mass than CuS or Cu2S, the copper sulfide products will weigh less.