Solvent extraction process for recovering copper from copper-containing solutions
US5895633A · kind A · utility
27Cited by
19References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Dec 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for recovering copper from a copper-containing material by pressure oxidation followed by solvent extraction and electrowinning. The copper-containing solution formed by pressure oxidation is diluted before solvent extraction and the raffinate solution from solvent extraction is neutralized to reduce the acid levels in the raffinate solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.