Process for producing K.sub.3 H(SO.sub.4).sub.2 crystals and potassium sulfate crystals
US4554151A · kind A · utility
16Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Sep 27, 1983 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Sep 27, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05D1/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing K.sub.2 SO.sub.4 from potassium chloride salts, calcium sulfate salts and another sulfate source wherein syngenite is formed and then decomposed with mineral acid to produce crystalline K.sub.3 H(SO.sub.4).sub.2. The K.sub.3 H(SO.sub.4).sub.2 crystals are recrystallized to produce K.sub.2 SO.sub.4 crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.