Quantitative investigation of the oxidation kinetics of Magnesia/Carbon composite

Abstract

The oxidation kinetics of magnesia/carbon (MgO/C) composite has been comprehensively investigated from both experimental and theoretical aspects based on current literatures, from which the shortcoming of theory has been discussed. A new kinetic model was developed to deal with the oxidation of MgO/C composite quantitatively. Effect of temperature and carbon content on the oxidation rate was especially discussed. Incorporation of the experimental data into the new model indicated that our new model could fit the experimental data very well. The kinetic parameter obtained from the new model was also compared with experimental values in literature. Besides the new model can perform a simple calculation, it can also reasonably predict the oxidation behavior based on limited experimental data. Copyright © 2009 The Ceramic Society of Japan.