Carbothermal reduction of UO3: Influence of the mixture of UO3 and carbon powders and kinetic modelling of the reaction

Florence Poncet (1, 2, 3) , Françoise Valdivieso (1, 2, 3) , Michèle Pijolat (1, 2, 3)

1 ProcESS-ENSMSE - Département Procédés et évolution des systèmes avec solides
2 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
3 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires

The influence of the physical mixture of carbon and uranium trioxide powders on the carbothermal reduction of UO3 has been studied : the texture of the powders mixtures was characterised, and its effect on the reduction into UO2 was shown. Finally, a kinetic modelling of the carbothermal reduction of U3O8 was proposed.

Mots clés: Carbothermal reduction; UO3; kinetics; modelling; carbon powders; uranium trioxide powders

Domaines: Génie des procédés

Florence Poncet, Françoise Valdivieso, Michèle Pijolat. Carbothermal reduction of UO3: Influence of the mixture of UO3 and carbon powders and kinetic modelling of the reaction. CIMTEC'98: 9th International Conference on Modern Materials & technologies, Jun 1998, Florence, Italy. ⟨hal-00409653⟩