Non-polluting alkali-metal bisulfate system for producing titanium dioxide pigment
US5591506A · kind A · utility
5Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | May 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G23/0532
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alkali-metal bisulfate is employed in a non-polluting and economically-feasible system for producing titanium dioxide pigment from titanium mineral or slag with recycling of alkali-metal bisulfate and ammonia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.