Recovery of nickel and cobalt from leach slurries
US4280988A · kind A · utility
3Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1980 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Apr 4, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B23/0461
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A slurry, such as might be obtained from acid leaching nickeliferous ores having a high iron content, is treated to separate dissolved nickel or cobalt from iron oxide solids. The treatment involves a controlled precipitation of the non-ferrous metal with the aid of calcium sulfide or barium sulfide followed by flotation to recover a high grade concentrate of the non-ferrous metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.