METHOD FOR SEPARATING URANIUM (VI) FROM ACTINIDES (IV) AND/OR (VI) AND THE USE THEREOF

WIPO Patent Application WO2005052950

A3

The invention relates to a method for separating uranium (VI) from one or several types of actinide selected from actinides (IV) and actinides (VI) other than uranium (VI), consisting a) in bringing into contact an organic phase which is insoluble in water and contains said uranium and one or several actinides with an acid aqueous solution containing at least a lacunar heteropolyanion and, if said actinide or one of said actinides is an actinide (VI), a reducing agent for selectively reducing said actinide (VI) and b) in separating the organic phase from the aqueous solution. Said invention can be used for reprocessing irradiated nuclear fuels and for processing rare-earth minerals, thorium and/or uranium.

JPS5923830	WINNING DEVICE FOR URANIUM FROM SEA WATER
WO/2014/083092	PROCESS FOR PRODUCING SOLID MICROSPHERULES OF ACTINIDE COMPOUNDS FROM AN ACTINIDE SALT SOLUTION AND ASSOCIATED DEVICE

DINH BINH (FR)
LECOMTE MICHAEL (FR)
BARON PASCAL (FR)
SOREL CHRISTIAN (FR)
BERNIER GILLES (FR)

PCT/FR2004/050594

November 10, 2005

November 17, 2004

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COMMISSARIAT ENERGIE ATOMIQUE (FR)
COGEMA (FR)
DINH BINH (FR)
LECOMTE MICHAEL (FR)
BARON PASCAL (FR)
SOREL CHRISTIAN (FR)
BERNIER GILLES (FR)

C01G43/00; C01G99/00; G21C19/46; (IPC1-7): G21C19/46; C01G43/00

FR2731717A1	1996-09-20
US4787979A	1988-11-29
US4196136A	1980-04-01

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