Leaching of copper ores to recover sulfur and silver catalyst
US3974253A · kind A · utility
7Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Jan 15, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In the oxidative leaching of copper ores with a silver catalyst initially dissolved in the leaching liquor, all or a portion of the silver precipitates and is recovered with the tailings. Elemental sulfur is extracted from the tailings, and the tailings are treated with concentrated sulfuric acid in the presence of oxygen to recover silver values for recycle to the leaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.