The copper sulfide is oxidized by Fe 3+. The resulting Fe 2+ is reoxidized to Fe 3+ by O 2. 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): (15.7a)

A process for preparing a copper sulfide of the formula Cu

Copper Sulfide Ore and Flotation Process by JXSC Mining 1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite.

Copper Smelting Process. In the autogenous system described by this report, sulfide concentrate and silica flux are blown into the furnace through a specially designed burner with oxygen and is flash smelted to about 50-percent copper matte. The matte flows down an inclined crucible, countercurrent to the slag flow, to the converting zone at ...

Copper sulfide in the presence or absence of metallic copper contained in a dross obtained from the copper drossing of lead bullion is separated from metallic lead entrained or occluded in the dross by introducing the dross into a vessel other than a reverberatory furnace, usually a kettle, also introducing an alkali metal sulfide, preferably sodium sulfide, into the kettle, and heating …

All primary sulfide ores of copper sulfides, and most concentrates of secondary copper sulfides (being chalcocite), are subjected to smelting.Some vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution, but this is a minor part of the market.. Carbonate concentrates are a relatively minor …

Sulfide concentrates were leached for 2 h under non-oxidative conditions, similar to those used in the first leaching stage of HydroCopper® process. It was shown that copper in bornite was the most active to dissolve in the studied environment. Over 85% of copper in chalcopyrite could be leached when present with other secondary copper sulfides.

The Copper sulphides Describe a family of chemical and mineral compounds with the formula Cu X S Y .These compounds comprise economically important minerals and synthetic materials. The most prominent copper sulphide minerals include copper (I) sulfide or cuprous sulfide, of chemical formulaCu 2 S found in the calcosine mineral and the copper (II) sulphide or cupric …

cell [1-6]. Copper sulfide has also been used for artifical rainfall agent. For these applications,a variety of techniques [7-15], such as sonochemical synthesis[16], microwave[17], hydrothermal process[15], and solvothermal synthesis [18] have been developed to …

The electrochemical growth of copper sulfide films on copper has been studied voltammetrically and potentiostatically in 0.1 M sodium chloride solutions containing sulfide concentrations ranging from 10 −4 M to 10 ... The use of a RDE allows control of the mass transport of SH − and aids in determining its role in the film growth process, ...

the nanostructure and morphologies of the copper sulfide (cus) material was characterized by using powder x-ray diffractometer, field effect scanning electron microscopy, energy dispersive x-ray...

A substantially dry intimate mixture of copper sulfide mineral concentrate and an added diluent material is contacted with at least a stoichiometric amount of chlorine relative to chlorinatable compounds of such materials at a temperature of between 300* and 400* C. to produce a reaction product containing water-soluble cupric chloride.

A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper …

Generally, the flotation process used for the extraction of copper from copper sulphide is relatively simple. Coarse-grained copper sulfide ore can use a stage grinding – a stage flotation process, and the fine-grained copper sulfide ore can adopt two stage grinding- two stage flotation process.

A process for preparing a copper sulfide of the formula Cu x S y, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper sulfide …

The process is suitable for copper-sulfide ores with low sulphur content in the original ore and copper minerals that float easily. The copper-sulfide ores are flocculated in a weakly alkaline...

A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper …

Conventional sulfide flotation method. This method means to vulcanize the copper oxide mineral first with sodium sulfide or other sulfide agents (such as sodium sulfide hydride), and then float with advanced xanthate as the collector for flotation. For the sulfuration, the lower the pulp pH value, the faster the sulfuration process, and the ...

The technology should be suitable for retrofits, e.g., the conversion of a copper heap leach, solvent extraction (SX) and electrowinning (EW) facility once the oxide and transition material is exhausted (Valkama, 2013). Throughout this paper, 'copper sulphides' describes both mixed copper–iron sulphides, such as

Copper sulfide ores can be divided into two main types from the ore structure: massive copper pyrite and leached copper-sulfide ores. Massive copper pyrite is of high economic value, with dense ...

Oxidation of sulfide is a complicated process. Depending on the conditions, the oxidation can produce elemental sulfur, polysulfides, polythionates, ... ZnS-doped with silver is used in alpha detectors while zinc sulfide with traces of copper has applications in photoluminescent strips for emergency lighting and luminous watch dials. 1185: 1314 ...

Copper Sulfide Flotation Reagents Lime is added to the Ball Mill by a Cone Type Dry Reagent Feeder. Other reagents, such as cyanide, xanthate, and a frother are fed and controlled by No. 12A Wet Reagent Feeders to the classifier and to the conditioner ahead of flotation. Sampling. Automatic Samplers are provided for the sampling requirements.

Although copper sulfide nanoparticles have been previously synthesized by several chemical,,,, electrochemical, organic,, and enzymatic,, methods, the first report on a biosynthesis approach was published in 2012 by Hosseini et al. in which the copper sulfide nanoparticles were synthesized from a pure copper sulfate solution by F ...

conversion of copper sulfate and oxisalfate to copper oxides (CuO, Cu 2 O), as. 20 Cu 1.8 S ‏+ 47O 2 18 CuO·CuSO 4 + 2 SO 2 2 CuO·CuSO 4 4 CuO + 2 SO 2 + O 2 To confirm the phase changes in sample 'a', DSC/TGA was performed under continuous supply of nitrogen at 100 ml/min maintaining ramp rate of 10 oC / min. The oxidation process and ...

Before the beneficiation of copper ores, crushing and grinding are required. The bulk ores are crushed to about 12cm by a jaw crusher or a cone crusher. Then the crushed materials are sent to the grinding equipment, and the final particle size of the copper ore is reduced to 0.15-0.2mm. Copper ore crushing process 1.

This process uses a series of physical steps and high temperatures to extract and purify copper from copper sulfide ores, in four basic steps: 1) froth flotation, 2) …

copper sulfide in the presence or absence of metallic copper contained in a dross obtained from the copper drossing of lead bullion is separated from metallic lead entrained or …

The roasting process is widely used in extracting copper from its sulfide ores. At present the development of a new process for winning copper from pelletized chalcocite concentrate is underway at the Bureau of Mines …

The sulfide material, known as matte, contains from 45 to 70 percent copper, depending on the particular process. Gangue minerals and oxidized impurities, including most of the iron, react with the flux and form a light, fluid layer of slag …