Kinetics of Carbothermic Reduction of Ilmenite

Abstract:

The reduction kinetics of ilmenite was investigated. Phase evolution during the reduction process was identified by XRD and morphology change was observed using SEM. Kinetic parameters of the activation energy and pre-exponential factor were determined by Kissinger-Akahira-Sunose (KAS) method and Coast-Redfern method&artificial isokinetic relationship (IKP) respectively. Results showed that when the reaction of titanium suboxides makes a growing contribution, the conversion dependence of activation energy has an ascending trend. When the conversion exceeded 0.7, the reactants almost consumed, and the process was controlled by diffusion.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 315-322
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.315
• Online since: April 2016
• Authors: Min Chen, Xuan Xiao, Xue Feng Zhang
• Keywords: Activation Energy, Carbothermic Reduction, Ilmenite, Kinetics, Reaction Mechanism

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