微量H<SUB>2</SUB>S含有H<SUB>2</SUB>-CO混合ガスによるペレット状炭化鉄の生成挙動

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書誌事項

タイトル別名
  • Formation Behavior of Iron Carbide Pellet with H<SUB>2</SUB>-CO Gas Mixture Including Small Amounts of H<SUB>2</SUB>S Gas
  • 微量H2S含有H2-CO混合ガスによるペレット状炭化鉄の生成挙動
  • ビリョウ H2S ガンユウ H2-CO コンゴウ ガス ニ ヨル ペレットジョウ タンカテツ ノ セイセイ キョドウ

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抄録

Using a thermobalance, a hematite pellet was reacted with H2-CO mixtures at 9731073K to produce an iron carbide pellet. H2S of low pressures unable to form FeS was added to the mixtures. First, reduction of iron oxides proceeded and then carbidization of metallic iron occurred. Small amounts of H2S in gas led to iron carbides (Fe3C, Orthorhombic) with complete conversion rather than free carbon or metallic iron as final products. In later stage of carbidization, higher iron carbide (Fe2.5C, Monoclinic) appeared partially in lower temperatures. The conditions of higher temperature and low sulfur pressure provided high quality iron carbides having nearly less than 0.03 mass% S. The tests without H2S provided lower iron carbide contents with much free carbon or metallic iron. Carbidization rates of a reduced iron pellet were analysed by an unreacted core model to investigate this process. The carbidization proceeded more rapidly in lower temperatures.

収録刊行物

  • 鉄と鋼

    鉄と鋼 85 (3), 208-215, 1999

    一般社団法人 日本鉄鋼協会

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