還元鉄鉱石の H_2-CO-CO_2 混合ガスによる炭化速度 Carbidization Rate of Reduced Iron Ore in H_2-CO-CO_2 Gas Mixture

この論文にアクセスする

この論文をさがす

著者

抄録

The carbidization rate of iron ore was thermogravimetrically measured and analyzed in H_2-H_2S-CO-CO_2 gas mixtures from 873K to 1073K, after it was completely reduced in H_2-H_2S gas mixture. Both gases contained sulfur low enough not to form sulfide. The fractional carbidization, f_θ[-], is defined as the mass gain relative to the mass of carbon converting iron to cementite completely, θ-Fe_3C. It grew along a parabolic curve without such a nucleation period as the carbidization CO-CO_2 system. Then, it grew linearly forming percarbide, χ-Fe_5C_2 after f_θ=0.5. The authors considered that the nucleation resistance of cementite and percarbide was reduced by higher carbon supersaturation than that in CO-CO_2 system. It assumed that the carbidization rate was controlled by carburization of metal with CO and the reaction interface decreased linearly with the amount of metal. Thus, the curve was analyzed using the equation of first order reaction : -ln(1-f_θ)=Rt, where the carbidization rate, R[s^<-1>] is constant with time. The maximum rate was obtained at about 20 vol% H_2 in H_2-CO system. This fact agreed with Turkdogan and his co-workers' previous work for carbon deposition. As the results, the author showed the adsorbed OH catalyzed carbidization in the following reaction : CO(g)+OH(ad)=CO_2(g)+1/2H_2. Sulfur suppressed the reaction with OH(ad) more strongly than O(ad).

収録刊行物

  • 鐵と鋼 : 日本鐡鋼協會々誌

    鐵と鋼 : 日本鐡鋼協會々誌 85(1), 20-26, 1999-01-01

    社団法人日本鉄鋼協会

参考文献:  25件中 1-25件 を表示

  • <no title>

    GARAWAY R.

    Iron Steelmaker 23, 27, 1996

    被引用文献2件

  • <no title>

    NAKAGAWA H.

    Tetsu-to-Hagane 82, 251, 1996

    被引用文献2件

  • <no title>

    TURKDOGAN E. T.

    Metall. Mater. Trans. 5, 11, 1974

    被引用文献2件

  • <no title>

    TURKDOGAN E. T.

    Metall. Mater. Trans. 5, 21, 1974

    被引用文献2件

  • <no title>

    FRUEHAN R. J.

    Metall. Mater. Trans. 4, 2123, 1973

    被引用文献1件

  • <no title>

    FRUEHAN R. J.

    Metall. Mater. Trans. 4, 1973, 2129

    被引用文献1件

  • <no title>

    SHATYNSKI S. R.

    Arch. Eisenhuttenwes 49, 129, 1978

    被引用文献7件

  • <no title>

    HAYASHI S.

    ISIJ Int. 37, 16, 1997

    被引用文献26件

  • <no title>

    SAWAI S.

    Tetsu-to-Hagane 85, 00, 1999

    被引用文献2件

  • <no title>

    SAWAI S.

    Tetsu-to-Hagane 85, 00, 1999

    被引用文献2件

  • <no title>

    KNACKE O.

    Thermochemical Property of Inorganic Substance, 1991

    被引用文献2件

  • <no title>

    桶谷繁雄

    電子線回析による金属炭化物の研究 141, 1971

    被引用文献1件

  • <no title>

    PETZOW G.

    組織学とエッチングマニュアル : 金属 セラミクス ブラスチック 128, 1997

    被引用文献1件

  • <no title>

    BURKE J.

    金属相変態速度論入門 160, 1976

    被引用文献2件

  • <no title>

    CHIPMAN J.

    Metall.Mater.Trans., 3, 55, 1972

    被引用文献2件

  • <no title>

    SAWAI S.

    CAMP-ISIJ 10, 978, 1997

    被引用文献1件

  • <no title>

    CONEJO A. N.

    ISIJ Int. 37, 967, 1997

    被引用文献3件

  • <no title>

    ZHANG X.

    Tetsu-to-Hagane 83, 299, 1997

    被引用文献9件

  • <no title>

    YE X.

    J. Jpn. Inst. Met. 49, 529, 1985

    被引用文献3件

  • <no title>

    GRABKE H. J.

    Ann. New York Academy Sci. 213, 110, 1973

    被引用文献2件

  • <no title>

    HONG S. Y.

    Phys. Rev. B 40, 7508, 1989

    被引用文献1件

  • <no title>

    HUME-ROTHERY W.

    鉄鋼物性工学入門-鉄とその合金の構造-, 1968

    被引用文献2件

  • <no title>

    YOSHIWARA K.

    J. Jpn. Inst. Met. 43, 409, 1979

    被引用文献1件

  • <no title>

    KASPERSMA J. H.

    Metall. Trans. B. 12B, 77, 1981

    DOI 被引用文献10件

  • <no title>

    GRABKE H. J.

    Surf.Sci. 63, 377, 1977

    DOI 被引用文献14件

各種コード

  • NII論文ID(NAID)
    110001481875
  • NII書誌ID(NCID)
    AN00151251
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00211575
  • NDL 記事登録ID
    107232
  • NDL 雑誌分類
    ZP42(科学技術--金属工学・鉱山工学--鉄鋼)
  • NDL 請求記号
    Z17-356
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
ページトップへ