Process for producing sodium chloride brines suitable for electrolysis
US4046865A · kind A · utility
2Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | Nov 22, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D3/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Contacting rock salt containing at least one member of the group consisting of anhydrite and calcium sulfate as an impurity with an aqueous sodium chloride solution initially containing from about 200 to about 300 g/l of sodium chloride and having a calcium ion concentration of 0.01 to 0.5 g/l and a sulfate ion concentration of 0.1 to 15 g/l, the multiplication product of said calcium ion concentration and said sulfate ion concentration having a maximum value of 2, and discontinuing said contact after the sodium chloride brine has formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.