Process for upgrading titaniferous materials
US5730774A · kind A · utility
5Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Apr 1, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for removing impurities from a titaniferous material that has been subjected to thermal reduction and which includes a titaniferous phase of general formula M.sub.3 O.sub.5. The thermally reduced titaniferous material is subjected to a secondary heat treatment to covert the M.sub.3 O.sub.5 phase to a more readily leachable M.sub.2 O.sub.3 phase. This material is then cooled and leached in an aqueous acid solution containing hydrochloric acid or sulfuric acid, and the leachate is separated from the titaniferous material to form a purified titaniferous material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.