Process for removing chloride impurities from TiO.sub.2
US4083946A · kind A · utility
18Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1977 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Mar 23, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for removing chloride impurities from TiO.sub.2 by injecting a gas selected from steam, air, nitrogen, or a mixture thereof, at a sonic or a supersonic velocity, a pressure of about 25-600 psi, and a temperature of about 140.degree.-650.degree. C., into the TiO.sub.2 to disperse it, and then separating the TiO.sub.2 from the gas and chlorides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.