Reductive leaching of limonitic ores with hydrogen sulfide
US4062924A · kind A · utility
12Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | May 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is provided for extracting iron values as soluble ferrous salts from a limonitic ore which comprises leaching the ore in an acidic medium in the presence of a reducing agent, the reducing agent being a sulfide. Non-ferrous metal values are also extracted from the ore and they may be selectively separated from the solubilized iron salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.