Oxidation Rate of Aluminum in Molten Iron by CaO-SiO2-Al2O3-FeO-MnO Slag

Haiping Sun; Katsumi Mori

doi:10.2355/isijinternational.36.Suppl_S34

ISIJ International

Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559

Oxidation Rate of Aluminum in Molten Iron by CaO-SiO₂-Al₂O₃-FeO-MnO Slag

Haiping Sun, Katsumi Mori

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Keywords: slag-metal reaction, kinetics, reoxidation, inclusion, aluminum, Al₂O₃, CaO-Al₂O₃ slag

JOURNAL FREE ACCESS

1996 Volume 36 Issue Suppl Pages S34-S37

DOI https://doi.org/10.2355/isijinternational.36.Suppl_S34

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Abstract

The kinetic behavior of aluminum oxidation in molten iron by CaO-SiO₂-Al₂O₃, CaO-Al₂O₃-FeO, CaO-Al₂O₃-MnO and CaO-SiO₂-Al₂O₃-FeO-MnO slags was investigated at 1 600°C under an argon atmosphere. The oxidation rate of aluminum by SiO₂ is slower than those by FeO and MnO in CaO-Al₂O₃ slag. No difference in the oxidation rate could be observed between slag containing FeO or MnO. More insoluble alumina inclusions were observed in the metal for slag containing FeO or MnO than in that containing SiO₂.

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