UO.sub.2 pellet fabrication process
US5015422A · kind A · utility
3Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Jan 13, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/61
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Making uranium dioxide pellets of controlled grain size by treating 50-500 g/l UO.sub.2 F.sub.2 with NH.sub.3 in a first and a second stages to form (NH.sub.4).sub.2 U.sub.2 O.sub.7 precipitate, wherein the NH.sub.3 /U molar ratio is between 3-5 in the first stage and between 6-12 in the second stage. The precipitate is then formed into UO.sub.2 pellets having grain size within the range from 10 to 100 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.