Reduction leaching of raw sea nodules with sulfides
US4085188A · kind A · utility
6Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Mar 8, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for extracting metal values from sea nodules is provided in which nickel, cobalt and copper values are selectively extracted by leaching raw sea nodules in an aqueous ammoniacal medium in the presence of a reducing agent for tetravalent manganese and carbonate to precipitate the reduced manganese as manganous carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.