Precious metal recovery using thiocyanate lixiviant
US7559973B2 · kind B2 · utility
7Cited by
20References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Oct 5, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
For removal of precious metal from thiocyanate leach solution, precious metal is transferred from precious metal-thiocyanate complex to precious metal-cyanide complex. Preparation of thiocyanate leach solution includes dissolving cyanide in an aqueous liquid and converting the cyanide to dissolved thiocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.