The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Nov. 17, 2004
Binh Dinh, Pont Saint Esprit, FR;
Michaël Lecomte, Avignon, FR;
Pascal Baron, Bagnols sur Céze, FR;
Christian Sorel, Villeneuve les Avignon, FR;
Gilles Bernier, Avignon, FR;
Binh Dinh, Pont Saint Esprit, FR;
Michaël Lecomte, Avignon, FR;
Pascal Baron, Bagnols sur Céze, FR;
Christian Sorel, Villeneuve les Avignon, FR;
Gilles Bernier, Avignon, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Compagnie General des Matieres Nucleaires, Velizy Villacoublay, FR;
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); and b) separating the said organic phase from the said aqueous solution. Applications: reprocessing irradiated nuclear fuels, processing rare-earth, thorium and/or uranium ores.