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| A New Model of Selective Oxidation During Blowing Low-Silicon Hot Metal |
| XIANG Chang-xiang,WANG Li-jun |
| School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract In order to understand the essence of problems occurred in blowing low-silicon hot metal, the Gibbs energies of oxidation of ［C］ and ［Si］ were calculated at different ［Si］ concentration. A new concept of “oxidation transfer concentration” was proposed, which can indicate the critical point of selective oxidation of ［Si］ or ［C］ in hot metal. On the basis of this new concept, the influence of low silicon hot metal on steelmaking process was discussed, and the optimal ［Si］ concentration in low silicon hot metal was given. Furthermore, effect of ［C］ concentration on this “oxidation transfer concentration” of ［Si］ was also analyzed and formulated, which can be used to evaluate the oxidation transfer concentration in various conditions. Thus, it will be flexible to perform operation accordingly in practice.
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Received: 17 May 2011
Published: 20 February 2012
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2012, Vol. 47 
