Thermodynamics of Fe_tO-TiO_2-SiO_2 Melts in Equilibrium with Solid Iron

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著者

    • ITO Kimihisa
    • Department of Materials Science and Engineering, Waseda University

抄録

The activities of Fe<sub><i>t</i></sub>O in a Fe<sub><i>t</i></sub>O-TiO<sub>2</sub>-SiO<sub>2</sub> system in equilibrium with solid iron at 1623 and 1673 K were measured by equilibrating molten slag with a H<sub>2</sub>-CO<sub>2</sub> gas mixture. The iso-activity contour of Fe<sub><i>t</i></sub>O for this system was calculated and influence of slag composition on the activity coefficient of Fe<sub><i>t</i></sub>O and the Fe<sup>3+</sup>/Fe<sup>2+</sup> ratio was determined. On the assumption that the Fe<sub><i>t</i></sub>O-TiO<sub>2</sub>-SiO<sub>2</sub> system is based on an ideal mixture of the pseudo-binary components, the activities of SiO<sub>2</sub> and TiO<sub>2</sub> were estimated using Richardson's method.

収録刊行物

  • ISIJ international  

    ISIJ international 37(6), 562-565, 1997-06-15 

    The Iron and Steel Institute of Japan

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