Separation of complex potassium salts from brine evaporites
US3967930A · kind A · utility
15Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1974 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Nov 18, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F5/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Evaporite minerals comprising mixtures of relatively coarse salts are treated in a manner such that certain of said salts are converted by recrystallization to very finely divided form and then separated from the coarse salts by size classification such as elutriation, the treatment being especially useful in a process for the recovery of potassium sulfate from marine evaporite mixtures such as kainite and halite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.