Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Effect of Slag on Decarburization Reaction of Stainless Steel Melt
Ryuji NAKAOShigenori TANAKAHironori TAKANO
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1994 Volume 80 Issue 1 Pages 30-35

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Abstract

During the refining of stainless steel melt, changes of slag condition and composition, especially with chromium oxide, affect the decarburization rate. The experiments were carried out to evaluate the effect of top slag state (liquid and/ or solid), and composition on the decarburization of stainless steel melt using 15kg induction furnace. Results were as follows:
1. In the range of high carbon content of melt of more than 0.5mass%, decarburization rate depends on (Cr2O3) content in slag, but is unaffected by addition of (MgO) and (Al2O3) less than 20mass%.
2. While, for the melt of carbon content less than 0.5mass%, decarburization rate becomes less than 1/4 of that in high carbon range (>0.5mass%) and is not affected by slag composition.
3. With increase of the activity of (Cr2O3) in slag, the lower decarburization limit of carbon content by slag is decreased.

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© The Iron and Steel Institute of Japan
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