Roast-reductive leach process for copper recovery
US4135918A · kind A · utility
7Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1978 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Mar 2, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sulfide containing copper and one or more of iron, nickel and cobalt, is dead-roasted at a temperature of 750.degree. C or above, then subjected to a pressure leach under reducing conditions to produce elemental copper and an aqueous solution of the other metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.