METHOD OF REPROCESSING OF COBBINGS OF SERVED OUT LININGS Russian patent published in 2005 - IPC

FIELD: nonferrous metallurgy; methods of reprocessing technogenic raw materials of production of non-ferrous metals.

SUBSTANCE: the invention is pertaining to the field of nonferrous metallurgy, in particular, to the methods of reprocessing technogenic raw materials of production of non-ferrous metals. Cobbings of the served out linings of the electrolysis baths of electrolytic refining of the nickel impregnated with an electrolyte are ground and then are leached by a diluted sulfuric acid at stirring of a pulp. At that the grinding of the material is conducted up to the size of aggregate - 0.075 mm, and lixiviation is conducted at the temperature of 60-70°C within 1-2 hours at concentration of sulfuric acid equal to 15-20 %. After lixiviation they settle copper from the solution using cementation-in-pulp by a nickeliferous dust with the following reprocessing of the cemented copper and a nickel-containing solution accordingly in copper and nickeliferous production providing an increased degree of extraction of non-ferrous metals from copper-containing raw material.

EFFECT: the invention ensures an increased degree of extraction of non-ferrous metals from copper-containing raw materials.

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