Production of sodium sesquicarbonate and sodium carbonate monohydrate
US7638109B2 · kind B2 · utility
7Cited by
31References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 18, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 5, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the production and recovery of crystalline sodium sesquicarbonate and of crystalline sodium carbonate monohydrate from aqueous liquors containing sodium carbonate and sodium bicarbonate. The crystalline products may optionally be heated or calcined to produce soda ash. The process is particularly suited for the recovery of soda ash from aqueous minewater streams obtained from solution mining of subterranean trona ore deposits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.