ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Non-linear Kinetic Analysis of Decarburization and Deoxidization of Liquid Iron by Ar-CO-CO2 Gas Mixtures
Tao XiaojieHiroyuki FukuyamaMasahiro SusaKazuhiro Nagata
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1999 Volume 39 Issue 4 Pages 301-308

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Abstract

Decarburization and deoxidization of liquid iron in Ar-CO-CO2 gas mixtures were investigated at 1843 K using a cold crucible. The carbon or oxygen concentration decreased against their chemical potential gradients in the initial stage of the 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 the decarburization of liquid iron in Ar-CO-CO2 under reduced pressure can be also reasonably described by the non-linear kinetic equations.

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© The Iron and Steel Institute of Japan
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