Process for crystallizing potassium sulfate
US4562058A · kind A · utility
14Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Mar 25, 1985 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D5/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process for the production of potassium sulfate crystals by the reaction of saturated solution of potassium chloride with langbeinite in the solid phase at a temperature of from 45.degree.-55.degree. C., thereby forming potassium sulfate crystals and magnesium chloride solution comprising the step of conducting the reaction in the presence of a growth enhancer comprising monosulfonated or monosulfated surfactant and a neutralized disulfonated surfactant in a weight ratio of from about 0.14 to 0.69.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.