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Thermodynamics of oxygen and nitrogen in liquid iron equilibrated with CaO- SiO2-Al2O3 slags

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Abstract

Nitrogen distribution ratios, LN ( = (mass pct N)/[mass pct N]), between CaO-SiO2-Al2O3 slags and liquid iron were measured at 1823 and 1873 K as a function of Si (or Al) content in metal, using lime and alumina crucibles. Based on these results and the reported values for activities of SiO2 (or Al2O3), nitride capacities, C(N), defined by (mass pct N) · PO2/3/4/PN2/1/2 were evaluated. Activities of SiO2 (or Al2O3) obtained by using the values for LN and C(N) obtained in present and previous gas-slag experiments were compared with previous results.

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Authors and Affiliations

  1. Iron & Steel Research Laboratories, Kobe Steel Ltd., Kakogawa, Japan

    Fumihiko Tamura

  2. Institute for Advanced Materials Processing, Tohoku University, Sendai, Japan

    Hideaki Suito (Professor)

Authors
  1. Fumihiko Tamura
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  2. Hideaki Suito
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FUMIHIKO TAMURA formerly Graduate Student with the Department of Metallurgical Engineering, Tohoku University.

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Tamura, F., Suito, H. Thermodynamics of oxygen and nitrogen in liquid iron equilibrated with CaO- SiO2-Al2O3 slags. Metall Trans B 24, 121–130 (1993). https://doi.org/10.1007/BF02657878

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  • DOI: https://doi.org/10.1007/BF02657878

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