Relationship between the aluminum and oxygen and sulfur partitions for molten iron and a CaO-Al 2O 3-ZrO 2 slag in equilibrium

Jun Tanabe, Ichiro Seki, Kazuhiro Nagata

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The relationship between the aluminum-oxygen and sulfur distribution ratio for molten iron and a CaO-Al 2O 3-ZrO 2 slag in equilibrium at 1 873 K was studied using an Al 2O 3 or CaO-stabilized ZrO 2 crucible. The slag and molten iron equilibrated with CaO·2Al 2O 3 and Css (cubic solid solution in CaO-ZrO 2 system) in the Al 2O 3 crucible, and with CaO·ZrO 2 and Css in the ZrO 2 crucible. These equilibrium states coincided with the phase diagram of CaO-Al 2O 3-ZrO 2. From the concentrations of aluminum and oxygen dissolved in molten iron, the Al 2O 3 activity in the slag was determined to be 0.393 in the Al 2O 3 crucible and 0.385 in the ZrO 2 crucible. These activities were compared with the data in the CaO-Al 2O 3 and CaO-ZrO 2 systems. The sulfur distribution ratio was higher a little in the ZrO 2 crucible than in the Al 2O 3 crucible and increased with aluminum content. The sulfide capacity of the fluxes was determined to be 8.77×10 -5 and 9.10×10 -5 in the Al 2O 3 and ZrO 2 crucibles, respectively.

    Original languageEnglish
    Pages (from-to)169-173
    Number of pages5
    JournalIsij International
    Volume46
    Issue number2
    DOIs
    Publication statusPublished - 2006 May 2

    Keywords

    • Activity
    • Aluminum
    • CaO-Al O -ZrO slag
    • Molten iron
    • Oxygen
    • Sulfide capacity
    • Sulfur distribution ratio
    • Thermodynamics

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

    Fingerprint Dive into the research topics of 'Relationship between the aluminum and oxygen and sulfur partitions for molten iron and a CaO-Al <sub>2</sub>O <sub>3</sub>-ZrO <sub>2</sub> slag in equilibrium'. Together they form a unique fingerprint.

  • Cite this