METHOD OF HYDROMETALLURGICAL PROCESSING OF POLYMETALLIC CONCENTRATE OF ELECTRONIC SCRAP Russian patent published in 2019 - IPC C22B7/00 C22B15/00 C22B11/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy of non-ferrous metals and can be used in processing technogenic raw material, in particular, electronic scrap. Method of hydrometallurgical processing of polymetallic concentrate of electronic scrap with extraction of precious metals involves extraction of copper and gold, wherein copper extraction is carried out in n stages with copper-ammonia solution of copper sulfatroammamine with concentration of 20–40 g/l in copper at room temperature and ratio of polymetallic concentrate to copper sulphate ammonium solution of not less than 1:10, wherein the number of steps n is determined by a given degree of extraction of copper, extraction of gold is carried out by means of iodine-iodide technology, and obtained solution with dissolved copper is sent to electrolysis unit for regeneration for copper deposition. Regenerated copper sulphate ammonium solution is returned to copper extraction stage.

EFFECT: simple method.

1 cl, 3 tbl