High temperature attack of ores by means of a liquor essentially containing a soluble bicarbonate
US4296073A · kind A · utility
4Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1979 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Jan 31, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the oxidizing attack at high temperature of ores containing at least one metal belonging to the group formed by uranium, vanadium and molybdenum, by means of an aqueous liquor containing a majority of sodium bicarbonate and a minority of sodium carbonate according to a ratio by weight of sodium bicarbonate to sodium carbonate of at least 1.5, in the presence of free oxygen injected into the reaction medium, this medium being maintained at a temperature of between 160.degree. C. and 300.degree. C. for at most six hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.