Dephosphorization and Desulfurization Equilibria between Liquid Iron Containing Cr and BaO-Cr<SUB>2</SUB>O<SUB>3</SUB>-Fe<SUB>t</SUB>O Slags

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  • INOUE Ryo
    Research Institute of Mineral Dressing and Metallurgy,Tohoku University
  • HONG Li
    Research Institute of Mineral Dressing and Metallurgy,Tohoku University, Now Beijing University of Iron and Steel Technology
  • SUITO Hideaki
    Research Institute of Mineral Dressing and Metallurgy,Tohoku University

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Other Title
  • BaO-Cr<SUB>2</SUB>O<SUB>3</SUB>-Fe<SUB>t</SUB>O系スラグ-含クロム溶鉄間の脱りん脱硫平衡
  • BaO-Cr2O3-FetO系スラグー含クロム溶鉄間の脱りん脱硫平衡
  • BaO Cr2O3-FetOケイ スラグ ガン クロム ヨウテツカン ノ ダツ

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Abstract

Phosphorus and sulfur distribution between MgO-saturated BaO-Cr2O3-FetO (-BaF2) slags and liquid iron containing Cr ([%Cr]= 016) has been measured in the temperature range from 1550 to 1650°C. The refining limit of dephosphorization in steel containing Cr and hot metal was discussed by using the values for phosphate capacity CP (=(%P)/[aP·aO5/2]). Thermodynamic analysis indicates that the phosphorus partition ratio increases with carbon up to a critical value and decreases beyond that.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 74 (10), 1939-1945, 1988

    The Iron and Steel Institute of Japan

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