Method for recovering gold from refractory carbonaceous ores
US6251163A · kind A · utility
21Cited by
28References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1998 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Mar 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The process of the present invention recovers precious metals from refractory carbonaceous precious metal ores by floating a portion of the ground ore, blending the concentrate with an unfloated portion of the ore, autogenously autoclaving the blended material, cooling the oxidized slurry by dilution, leaching the oxidized slurry after dilution in the presence of a thiosulfate lixiviant, and recovering the precious metal by suitable techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.