Method and apparatus for recovering sulfuric acid from a titanium sulfate waste liquor
US4954262A · kind A · utility
4Cited by
1References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for recovering sulfuric acid from a titanium sulfate waste liquor by diffusion dialysis in a diffusion dialytic cell provided with anion exchange membranes, which comprises subjecting the titanium sulfate waste liquor to precision filtration to remove a solid content having a particle size of at least 0.1 .mu.m to a level of not more than 100 .mu.g/l, and placing the filtered liquor to face water with an anion exchange membrane interposed therebetween so that sulfuric acid in the titanium sulfate waste liquor is recovered by diffusion dialysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.