Separation of cobalt and manganese from trimellitic acid process residue by extraction, pH adjustment, and magnet
US4309390A · kind A · utility
2Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Recovery of cobalt and manganese metal oxidation catalysts from residue of trimellitic acid manufacture and separation of recovered cobalt from recovered manganese can be accomplished by a novel method involving dissolving the residue in water, displacing dissolved cobalt as cobalt metal by manganese metal added to the solution whose pH has been adjusted to pH of 6 and then using magnetic means for separating metallic cobalt from the cobalt-free solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.