Precious metal recovery using thiocyanate lixiviant
US7537640B2 · kind B2 · utility
7Cited by
20References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2007 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Oct 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heap with precious metal-containing mineral material with precious metal locked within sulfide mineralization is subjected to bio-oxidation followed by acidic thiocyanate leaching to dissolve precious metal. Sulfide sulfur is oxidized during both of the bio-oxidation and the thiocyanate leaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.