Process for separating a chemical element from uranium (VI) starting from a nitric aqueous phase, in an extraction cycle for the uranium
US8182773B2 · kind B2 · utility
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Key dates
| Filing date | Jul 2, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 7, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A chemical element to be very efficiently separated from uranium starting from an acid aqueous phase, in an extraction cycle for the uranium, when this chemical element is present in said phase at a concentration less than that of the uranium, or even as a trace element, and when it is moreover less extractable by the extractant used in this extraction cycle than is the uranium. The chemical element can notably be neptunium(IV) or thorium 228.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.