EXTRACTION OF COPPER FROM CHALCOPYRITE Russian patent published in 2007 - IPC C22B15/00 C22B3/18 

Abstract RU 2294974 C2

FIELD: extraction of copper from chalcopyrite.

SUBSTANCE: proposed method includes (a) oxidation of sulfur in chalcopyrite solution at definite conditions of interaction and release of at least part of copper contained in chalcopyrite into solution followed by stage of reduction of sulfur in solid product from stage (a) to sulfide at definite conditions of interaction and oxidation of sulfur in solid product from stage (b) by solution at definite conditions of interaction and release of at least part of residual copper in solid product into solution in form of copper ions at stage (c). Proposed method includes additionally extraction of copper from one or more solutions of stages (a) and (c).

EFFECT: increased rate of leaching-out and extraction of copper into solution.

23 cl, 2 dwg

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RU 2 294 974 C2

Authors

Sho Rajmond Uolter

Ehzdejl Ljusi

Dzherson Andrea Rut

Tomas Dzhoan Ehlizabet

Kharmer Sara Luis

Dates

2007-03-10Published

2002-10-29Filed