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electroleaching | Alloy Wiki
Home » Steel Guide » Steel World » electroleaching
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electroleaching

Posted by: steel world 2023-10-19 Comments Off on electroleaching
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The leaching method uses the anode reaction of the electrolytic cell to dissolve the valuable metals in the material into the solution. Also called electrochemical leaching. The material (graphite powder can be added to improve the conductivity) is made into an anode plate or suspended in powder form in the anolyte. The cathode and anode chambers are separated by a diaphragm. After direct current is passed, the alumina material dissolves at the anode and metal is precipitated at the cathode. (When electrochlorinating gold, NaOH is generated at the cathode). The leaching and metal extraction of this method are completed in the same equipment and at the same time, making full use of the reactions of the cathode and anode. It has the characteristics of low energy consumption, simple process and low pollution. In 1882, this method was used to treat lead matte, and was subsequently used to study the leaching of white metal nickel and conduct semi-industrial tests. In 1951, the production of metallic nickel by nickel sulfide electrolysis was first industrialized. Canada’s Falconbridge Ltd. International Nickel Company’s Thompson Nickel Refinery and China’s Jinchuan Nonferrous Metals Company both use electric leaching to process nickel sulfide concentrate after copper and nickel separation to produce pure nickel (see Nickel sulfide electrolytic refining). Electroleaching of metal stamping copper sulfide minerals has also been studied and is considered a promising method.

Link to this article：electroleaching

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