Influence of texture and physical mixture of UO3 and C for carboreduction of UO3 into UO2

Florence Poncet; Françoise Valdivieso; Michèle Pijolat

doi:10.1016/S0022-3115(98)00061-0

Journal articles

Influence of texture and physical mixture of UO₃ and C for carboreduction of UO₃ into UO₂

Florence Poncet ^{1, 2} Françoise Valdivieso ^{1, 2} Michèle Pijolat ^{2, 1}

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels

2 ProcESS-ENSMSE - Département Procédés et évolution des systèmes avec solides

Abstract : The carboreduction of UO₃ into UO₂ has been studied with an excess of carbon (C/U=3 mole ratio). The results of thermogravimetric (TG) studies, X-ray diffraction (XRD) and SEM reveal that the carboreduction depends upon the texture and the physical mixture of the precursors UO₃ and carbon. Indeed, optimal carboreduction was obtained with an improvement of UO₃ and carbon grains contacts during the reduction. The preparation of the mixture (UO₃ + 3C) has been optimised by a slight manual grinding.

Keywords : carboreduction UO₃ texture diffraction physical mixture

Document type :

Journal articles

Domain :

Engineering Sciences [physics] / Chemical and Process Engineering

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https://hal-emse.ccsd.cnrs.fr/emse-00610111
Contributor : Andrée-Aimée Toucas <>
Submitted on : Thursday, July 21, 2011 - 10:21:11 AM
Last modification on : Wednesday, June 24, 2020 - 4:18:16 PM

Influence of texture and physical mixture of UO₃ and C for carboreduction of UO₃ into UO₂

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Influence of texture and physical mixture of UO3 and C for carboreduction of UO3 into UO2

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Influence of texture and physical mixture of UO₃ and C for carboreduction of UO₃ into UO₂