Deoxidization equilibria with zirconium and sulfur partition for molten iron/CaO-AI2O3-ZrO2 slag at 1873K

Ichiro Seki, Jun Tanabe, Kazuhiro Nagata

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    2 Citations (Scopus)


    The relationship of zirconium and oxygen concentrations with sulfide capacity was clarified using equilibrated molten iron with CaO-AI 2O3-ZrO2 slag at 1873 K. AI2O 3 and CaO-stabilized ZrO2 crucible saturated compositions were equilibrated with CaO-2AI2O3 and crucible solid solution (Css) in the CaO-ZrO2 system, and with CaO-ZrO2 and Css, respectively. From the concentrations of zirconium and oxygen dissolved in molten iron, ZrO2 activities of the slag of the AI 2O3 crucible and ZrO2 crucible compositions were determined to be 0.885 and 0.0343, respectively. On the other hand, the sulfur distribution ratio of the ZrO2 crucible saturated composition was higher than that of the AI2O3 crucible saturated composition. Sulfide capacities were determined to be 6.30×10-5 and 8.07×10-5 in the AI2O3 and the ZrO2 crucible saturated compositions, respectively.

    Original languageEnglish
    Pages (from-to)817-820
    Number of pages4
    JournalSteel Research International
    Issue number11
    Publication statusPublished - 2008 Nov 1


    • Activity
    • Molten iron
    • Oxygen
    • Sulfide capacity
    • Sulfur distribution ratio

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Physical and Theoretical Chemistry
    • Metals and Alloys
    • Materials Chemistry

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