METHOD FOR REPROCESSING OF COPPER CONTAINING SULFIDE MATERIALS Russian patent published in 2005 - IPC

Abstract RU 2244031 C2

FIELD: non-iron metallurgy, in particular reprocessing of copper containing sulfide materials.

SUBSTANCE: invention relates to reprocessing of copper containing materials to produce solutions useful for copper recovering. Method includes two-step autoclave leaching with sulfuric acid. The first step is carried out with limited copper converting into solution. On the second step precipitate is fully leached with fresh sulfuric acid solution while maintaining specific ratio of liquid and solid phases. Method of present invention makes in possible to produce in both leaching steps copper containing solutions of desired composition.

EFFECT: improved method for copper recovering, reduced capacity of autoclave equipment.

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RU 2 244 031 C2

Authors

Shneerson Ja.M.

Lapin A.Ju.

Kositskaja T.Ju.

Dates

2005-01-10—Published

2003-02-25—Filed