Patent · US Expired

Extraction of copper from an ammoniacal copper solution

US4350667A · kind A · utility

6Cited by

9References

3Claims

0Family size

Assignee

MX-Processor Reinhardt & Co AB · SE

Inventors

Sven Andersson · Skara, SE
Harald D. Ottertun · Mölndal, SE
Hans Reinhardt · Bretten, DE

Key dates

Filing date	Feb 20, 1981
Grant date	Sep 21, 1982
Priority date	—
Expiry date	Feb 20, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Copper can be extracted from an ammoniacal copper solution by contacting said solution with an organic phase containing a first extraction reagent consisting of a beta-diketone as well as a second extraction reagent consisting of a hydroxy oxime, a hydroxy quinoline, or an alkylaryl sulphonamido quinoline. Alternatively, the copper solution can first be contacted with an organic phase containing the first extraction agent, and subsequently be contacted with an organic phase containing the second extraction reagent. It is possible to reach a low percentage of copper in the aqueous solution by using a low number of extraction steps.

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