Patent · US Expired

Process for producing a copper sulfate solution

US4251489A · kind A · utility

1Cited by

1References

8Claims

0Family size

Assignee

Nordeutsche Affinerie · DE

Inventors

Elmar Kniprath · Hamburg, DE
Gerd Mrusek · Buxtehude, DE
Hermann Priebe · Hamburg, DE
Claus Reppenhagen · Hamburg, DE

Key dates

Filing date	Mar 8, 1979
Grant date	Feb 17, 1981
Priority date	—
Expiry date	Mar 8, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01G3/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for extracting copper from a compact mass, such as bulk metallic copper and/or copper highly contaminated with insoluble substances, in which the mass of metallic copper is leached with a liquor containing Cu.sup.2+ ions and SO.sub.4.sup.2- ions, the liquor being oxidized separately from the leaching stage, e.g. with oxidizing agents including oxygen-containing gases such as air. At least part of the oxidized liquor is recycled to the leaching stage for the metallic copper. The copper sulfate solution which thus results is recovered.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.