Method and system for gold recovery
US9206491B2 · kind B2 · utility
3Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Oct 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for recovering precious metal from an acidic pregnant solution resulting from halogen or hypohalite leaching of an ore, comprising lowering the ORP of the pregnant leachate with a reducing agent in the presence of slurried non-carboneous particles. The precious metal deposits on the surfaces of the particles and a barren solution comprising substantially all the halogen values of the pregnant solution in the form of sodium chloride, sodium bromide or hypohalites is recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.