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:
Oct. 25, 2022
Filed:
Jun. 28, 2018
Commissariat À L'énergie Atomique ET Aux Énergies Alternatives, Paris, FR;
Orano Cycle, Courbevoie, FR;
Electricite DE France, Paris, FR;
Cécile Marie, Avignon, FR;
Clémence Berger, Avignon, FR;
Guillaume Mossand, Avignon, FR;
Emilie Russello, Bagnols sur Ceze, FR;
Eugen Andreiadis, Avignon, FR;
Dominique Guillaumont, Avignon, FR;
Manuel Miguirditchian, Avignon, FR;
Christian Sorel, Villeneuve les Avignon, FR;
COMMISSARIAT A L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES, Paris, FR;
ORANO CYCLE, Châtillon, FR;
ELECTRICITE DE FRANCE, Paris, FR;
Abstract
The use of carbamides as extractants for fully or partially separating uranium(VI) from plutonium(IV) in an aqueous solution obtained by dissolving a spent nuclear fuel in nitric acid, by method of liquid-liquid extraction, without carrying out any reduction of the plutonium(IV) to plutonium(III). The invention also relates to new carbamides. Uses are the processing of spent nuclear fuels based on uranium (especially uranium oxides—UOX) or uranium and plutonium (especially mixed uranium and plutonium oxides—MOX).