Controlled metal leach recovery circuit
US8372360B2 · kind B2 · utility
9Cited by
47References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2011 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Jul 21, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B15/0095
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of metals from a leached metal-bearing material is controlled and improved by providing a high grade pregnant leach solution (“HGPLS”) and a low grade pregnant leach solution (“LGPLS”) to a single solution extraction plant comprising at least two solution extractor units, at least two stripping units, and, optionally, at least one wash stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.