Saprolite neutralisation of heap leach process
US8454723B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Sep 4, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B23/043
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heap leach process for the recovery of nickel and/or cobalt from a laterite ore, said process including the steps of: a) providing one or more heaps of a nickeliferous laterite ore; b) leaching the ore in a heap leach step by applying acid to one or more heaps to provide a pregnant leach solution; c) neutralizing the pregnant leach solution with ground saprolite ore; and d) recovering the nickel and/or cobalt from the neutralized pregnant leach solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.