Production of soda ash from nahcolite
US4557910A · kind A · utility
9Cited by
23References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1982 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Mar 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/126
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Soda ash is prepared from dry-mined nahcolite ore by partially calcining the ore, dissolving the ore in aqueous solution, separating the resultant solution from the ore insolubles, crystallizing anhydrous sodium carbonate or sodium carbonate monohydrate, and recovering the crystallized sodium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.