Recovery of nickel and copper from sulphide concentrates by bioleaching
US6582494B1 · kind B1 · utility
15Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2002 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jul 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for recovering nickel and copper from a concentrate which includes the steps of subjecting the concentrate to a treatment phase to produce a first leach solution which contains predominantly copper and a second leach solution which contains predominantly nickel, subjecting the first leach solution to a process for copper recovery which includes a solvent extraction step to produce a raffinate which is high in sulphuric acid, recycling at least a portion of the raffinate to the aforementioned treatment phase and subjecting the second leach solution to a process for nickel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.