Causticization method
US4451443A · kind A · utility
5Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Jul 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2/104
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A causticization method including the steps of calcining limestone in the presence of additive means for producing lime of increased lime efficiency relative to the lime that would result from calcining such limestone without the presence of the additive means, lime efficiency being determined on a sodium carbonate solution for which conditions, other than the character of the lime, are fixed, and subsequently feeding the lime of increased lime efficiency into the sodium carbonate solution for producing sodium hydroxide and calcium carbonate from the sodium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.