Actinide mixed oxide conversion by advanced thermal denitration route

JOURNAL OF NUCLEAR MATERIALS

卷:519

Article

Leblanc, Martin^1,2  Leturcq, Gilles¹  Welcomme, Eleonore¹  Deschanels, Xavier²  Delahaye, Thibaud³ 

[1] CEA Marcoule, Res Dept Min & Fuel Recycling Proc Serv, Lab Etud Proc Convers Actinides,LPCA, DEN MAR DMRC SMFA LPCA,Nucl Energy Div,CEA, F-30207 Bagnols Sur Ceze, France

[2] Ctr Marcoule, UMR5257, ICSM, F-30207 Bagnols Sur Ceze, France

[3] CEA Marcoule, DIR, DEN MAR DIR, CEA,Nucl Energy Div, F-30207 Bagnols Sur Ceze, France

关键词: Denitration;    Conversion;    Organic additives;    Actinide;    Uranium;    Plutonium;   

DOI  :  10.1016/j.jnucmat.2019.03.049

来源: Elsevier

【 摘 要 】

In the framework of generation IV development for nuclear reactors, actinide mixed oxides are considered for multirecycling plutonium fuels and for transmutation targets of minor actinides. In this context, new processes are being developed for either the synthesis of mixed uranium-plutonium oxide compounds for MOx fuel or uranium-americium target fabrications. The main purposes are to simplify and step up industrial processes as well as to decrease actinide dust dispersion, and liquid effluent and gaseous releases. Among options for conversion route, a novel and patented advanced thermal denitration in presence of organic additives was established successfully to synthesize UO2+delta, U0.55Pu0.45O2 +/-delta, and U0.9Am0.1O2-delta oxides. Here, we describe the different intermediate steps of this process together with the characterization of the oxides obtained. The data highlight several advantages of this new route for actinide conversion. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

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