イルメナイト鉱のアーク炉内炭素還元に関する二段反応モデル Two - Site Model for the Carbothermic Reduction of Ilmenite in Arc Furnace at 1,900 to 2,000 K

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A comprehensive mathematical model was developed to simulate the reduction of ilmenite ore with carbon in commercial electric furnaces. Two distinct reaction sites were assumed to exist in an open arc furnace : seething surface and bulk bath of titania slag. The model takes into account such physical features as surface tension (or Laplace-Kelvin pressure), viscosity and density (or residence time by Allen's law), together with equilibrium mass balances incorporating the thermodynamic properties of the TiO2 - TiO1.5 - TiO - FeO - SiO2 - AlO1.5 - MgO slag and the molten Fe-C metal. The model explains all known industrial observations : interdependence of the TiO2 content of slag and the carbon content of pig iron, its variation with temperature, electric power consumptions, and so forth. The model also provides partial explanations for the foaming and permanent CO gas boiling of the slag. The computer model predictions can be used to monitor and optimize the conditions for smelting different ores in various operating modes.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(13), 977-985, 1998-12-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10002468862
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4630890
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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