Method for reducing cyanide consumption during processing of gold and silver ores to remove base metals
US6406675B1 · kind B1 · utility
1Cited by
18References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Sep 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for reducing consumption of cyanide and level of carbon fouling during cyanide extraction of gold and silver from their ores by treating the ore or aqueous slurry of the ore with a water-soluble sequestering agent for the base metal species for a time sufficient for the sequestering agent to react with at least a portion of the base metal species.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.