Process for obtaining a uranium-bearing concentrate of high purity from liquors contaminated with zirconium
US4894209A · kind A · utility
1Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1987 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Jun 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G43/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention has as its object a process for the purification of a uranium solution which is contaminated by zirconium. This process consists of bringing the pH of the solution to a value of 1 to 3, then adjusting the pH of the said solution to, and maintaining it at a value of 2.5 to 3 while raising the temperature to a value of around 30.degree. to around 60.degree. C. for a period sufficiently long that there occurs a selective precipitation of at least 70% of the zirconium while the uranium remains in the dissolved state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.