METHOD FOR PROCESSING WASTES CONTAINING COPPER, ZINC, SILVER AND GOLD Russian patent published in 1998 - IPC

Abstract RU 2109076 C1

FIELD: processing of wastes, mainly, metallurgical production with recovery into commercial products of copper and zinc, silver and gold in the form of high-grade concentrates. SUBSTANCE: method is based on treatment of initial material with aqueous-salt solution containing oxidizer for intensification of leaching of valuable components, such as silver and gold with subsequent sorption recovery of gold and silver, selective extraction concentration of copper and zinc and their electrolytic precipitation. Method has been approbated on metallurgical production wastes containing, wt.-%: copper, 2.5-3.5; zinc, 0.7-1.5; silver, 0.01-0.02; gold, 0.0002-0.0004; iron, 30-35. Combination of intensive leaching and selective sorption and extraction recovery of metals makes it possible to attain two-fold increase of commercial products in processing of metallurgical wastes. EFFECT: higher efficiency. 5 cl, 4 tbl

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RU 2 109 076 C1

Authors

Verevkin Georgij Vasil'Evich

Denisov Valerij Valentinovich

Buzlaev Jurij Mikhajlovich

Dates

1998-04-20Published

1996-02-14Filed