Process for producing and decomposing syngenite
US4554139A · kind A · utility
4Cited by
9References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D9/00
- 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.