Patent 2007271166

Method for separating a chemical element from uranium (VI) using an aqueous nitric phase, in a uranium extraction cycle

Abstract

Abstract: The invention relates to a method for very effectively separating a chemical element from uranium using an aqueous acid phase, in a uranium extraction cycle, when this chemical element is present in said phase with a concentration below that of the uranium, or even in trace amount, and when, in addition, it is less extractable by the extractant used in this extraction cycle than uranium. The chemical element may in particular be neptunium V) or thorium 228. Applications: reprocessing of irradiated nuclear fuels. (57) Abr~g : L'invention concemne un proc~d6 permettant de sparer trs efficacement un codment chimique de eturanium partir dune phase aqueuse acide, dans un cycle d'extraction de uranium, lorsque cet 6l6ment chimique est present dans ladite phase une _ concentration inf~rieure celle de uranium, voire l6tat de traces, et quil est, de plus, mos extractible par lextractant utilise dans ce cycle d'extraction que ne l'est ]'uranium. L'6l6ment chimique peut notamment 6tre le neptunium(1V) ou le thorium 228. a v Applications : retraitement des combustibles nuclnaires irradios.

Information

Australian application number
2007271166
Country
FR
Status
Ceased
Type
Standard
Applicant
AREVA NC, (FR)
Application year
2009

International Patent Classification (IPC) codes