Method for coproducing calcium carbonate and sodium hydroxide
US5993772A · kind A · utility
6Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D1/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for the coproduction of calcium carbonate and sodium hydroxide, comprising PA0 causticizing sodium carbonate with milk of lime; PA0 separating the calcium carbonate and the sodium hydroxide formed in the causticizing stage; and PA0 carbonating a mixture of milk of lime and of the calcium carbonate resulting from the causticizing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.