Processing copper-nickel matte
US4468302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Aug 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Feed material, such as matte, containing nickel and copper values and sulfur, is leached with an acidic copper sulfate solution to dissolve nickel, cobalt and other metal values and to cement copper from solution. The leach residue is roasted, and a selected quantity of copper is leached from the resulting calcine with sulfuric acid to form a copper sulfate electrolyte. The rest of the calcine is smelted to form copper-nickel anodes which are electrorefined in the copper sulfate electrolyte, thereby producing a cathodic copper deposit and a nickel-enriched, copper sulfate electrolyte which is recycled for leaching additional feed material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.