EXTRACTION METHOD OF NOBLE METALS FROM WASTES OF RADIO-ELECTRONIC INDUSTRY Russian patent published in 2009 - IPC C25C1/20 C25C7/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy of noble metals and can be used on enterprises of repeated metallurgy for processing of radio-electronic scrap and at extraction of gold or silver from wastes of electronic and electrochemical industries, particularly to extraction method of noble metals from wastes of radio-electronic industry. Method includes receiving from wastes of copper-nickel anodes, containing admixtures of noble metals, its electrolytic anodic dissolutionc by copper sedimentation on cathode, receiving of nickel solution and sludge with noble metals. Additionally anodic dissolution is implemented from the anode, consisting 6-10% of iron, at placement of cathode and anode in separate reticulate diaphragms for creation of cathode and anode chambers with stand in it chlorine-containing electrolyte. Received electrolyte during the process of electrolysis from cathode chamber is directed into the anode chamber.

EFFECT: increasing of anode dissolution rate.

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