Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Reexamination Certificate
2004-11-17
2009-11-24
Mayes, Melvin C (Department: 1793)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
C423S002000, C423S003000, C423S009000, C423S010000, C423S011000, C423S012000, C423S015000, C423S249000, C423S250000, C423S251000, C423S254000, C423S306000, C423S314000, C423S326000, C423S606000, C423S617000, C423S635000, C423S641000, C252S643000, C204S157150, C588S018000
Reexamination Certificate
active
07622090
ABSTRACT:
The invention relates to a method for separating uranium(VI) from one or more actinides selected from actinides(IV) and actinides(VI) other than uranium(VI), characterized in that it comprises the following steps:a) bringing an organic phase, which is immiscible with water and contains the said uranium and the said actinide or actinides, in contact with an aqueous acidic solution containing at least one lacunary heteropolyanion and, if the said actinide or at least one of the said actinides is an actinide(VI), a reducing agent capable of selectively reducing this actinide(VI); andb) separating the said organic phase from the said aqueous solution.Applications: reprocessing irradiated nuclear fuels, processing rare-earth, thorium and/or uranium ores.
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Baron Pascal
Bernier Gilles
Dinh Binh
Lecomte Michaël
Sorel Christian
Brinks Hofer Gilson & Lione
Commissariat a l''Energie Atomique
Compagnie General des Matieres Nucleaires
Gregorio Guinever S
Mayes Melvin C
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