Process for extraction of platinum group metals from chromite-bearing ore
US4295881A · kind A · utility
11Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1980 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Jun 10, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/025
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group metals are then substantially disassociated from the metal layer containing them. The magnetic fraction of the ore may itself be further treated to remove any platinum group metals associated therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.