Process for recovery of potassium from manganate plant wastes
US4085191A · kind A · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1977 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Apr 26, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G45/1214
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Potassium is recovered as a dilute KOH solution from residue solids resulting from conversion of manganese ore to K.sub.2 MnO.sub.4 by reacting the solids with a Ca(OH).sub.2 under specified conditions. The resulting KOH solution can be returned to the K.sub.2 MnO.sub.4 plant and the solids of reduced potassium content are suitable for disposal in a landfill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.