Process for liquid-liquid extraction of cobalt from nickel
US4088733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Feb 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for separating cobalt from nickel in an aqueous acid solution containing the above metals, which comprises contacting said solution with an organic phase comprising (a) 65-98% by volume of a concentrated alpha-hydroxyoxime extractant, a 1% by volume solution of which in xylene has per liter a maximum loading capacity of about 0.864 g. of copper, and (b) 2-35% by volume of an organophosphoric acid of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, aryl or aralkyl radical, while maintaining the pH of said solution between 1 and 6, whereby cobalt is extracted from the aqueous phase to the organic phase and separating the resultant cobalt pregnant organic phase from the aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.