KINETIC MODELING STUDY OF A VOLOXIDATION FOR THE PRODUCTION OF U3O8POWDER FROM A UO2PELLET

• DOI: 10.5516/net.2009.41.8.1073
• Publication Date: 2011-06-03T10:30:36Z
• Authors: Sang-Mun Jeong; Jin-Mok Hur; Han-Soo Lee
• Keywords: Pellet

A kinetic model for the oxidation of a UO₂ pellet to U₃O? powder has been suggested by considering the mass transfer and the diffusion of oxygen molecules. The kinetic parameters were estimated by a fitting of the experimental data. The activation energies for the chemical reaction and the product layer diffusion were calculated from the kinetic model. The oxidation conversion of a UO₂ pellet was simulated at various operating conditions. The suggested model explains the oxidation behavior of UO₂ well.