The Least Number of Chemical Reactions to Describe the Oxidation and the Carburization of Liquid Iron in Irreversible Processes.

DOI Web Site 参考文献14件
  • Tao Xiaojie
    Graduate Student, Tokyo Institute of Technology
  • Fukuyama H.
    Department of Chemistry and Materials Science, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Susa M.
    Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology
  • Nagata K.
    Department of Chemistry and Materials Science, Graduate School of Science and Engineering, Tokyo Institute of Technology

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Kinetics of reactions between CO–CO2 mixtures and liquid iron were investigated at 1843 K using the cold crucible technique and the concentration changes of C and O were analyzed using non-linear kinetic equations based upon independent reactions in the system. The carbon or oxygen concentration changed against the chemical potential gradient in the initial stage of the reactions. It was proved that such concentration changes were controlled only by interfacial reactions. The concentration changes in the whole process were successfully reproduced by nonlinear equations based upon the two independent reactions in which the nonlinear reaction CO(g)=C+O was included. It has been shown that there are always some combinations of independent reactions which can describe the chemical changes in irreversible processes from the macroscopic point of view.

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