Properties of Coke Carbonized at 600-900°C Final Coke Temperature

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  • 最終コークス温度600-900℃に乾留されたコークスの性状
  • サイシュウ コークス オンド 600 900ドC ニ カンリュウサレタ コーク
  • Properties of Coke Carbonized at 600-900°C Final Coke Temperature

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Description

Properties of coke which was carbonized at lower temperatures than in the conventional process were examined experimentally, and the possibility of its use in a blast furnace was discussed.<BR>The following results were obtained:<BR>(1) When coke was carbonized under the conditions of final coke temperature higher than 800°C and higher heating rate, the same level of coke strength as that of conventional coke was obtained.<BR>(2) The heating rate in the coal bed between 400°C and 500°C and the bulk density of charged coal controlled the pore structure, and were also important factors in determining coke qualities.<BR>(3) It was noticed that the coke qualities might be improved by heat treatment in a blast furnace before the occurrence of coke degradation by solution-loss reaction.<BR>(4) In order to obtain a higher heating rate in the coal bed, it was required that the chamber wall was constructed by the materials with high thermal-conductivity or that the thickness of chamber wall became thinner.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 78 (8), 1314-1321, 1992

    The Iron and Steel Institute of Japan

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