Process for recovering platinum group metals from material containing base metals
US7033480B2 · kind B2 · utility
20Cited by
16References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Nov 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction 306 to remove acid in the nickel recovery circuit. The acid product 326 can then be neutralized and/or recycled as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.