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Fundamental Research on Reaction Between Coal and Molten Ore During Smelting Reduction

Research Project

Project/Area Number 02650486
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 金属精錬・金属化学
Research InstitutionChiba Institute of Technology

Principal Investigator

TATE Mitsuru  Chiba Institute of Technology, Department of Metallurgical Engineering, Professor, 工学部, 教授 (50013074)

Co-Investigator(Kenkyū-buntansha) OHTSUKA Michio  Chiba Institute of Technology, Department of Metallurgical Engineering, Research, 工学部, 助手 (10110868)
SASABE Minoru  Chiba Institute of Technology, Department of Metallurgical Engineering, Professo, 工学部, 教授 (00016370)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsSmelting Reduction / Coal / Volatile Matter / Reduction Rate / 製鉄 / 溶融酸化鉄 / 揮発分 / 還元剤 / 直接観察
Research Abstract

In order to clarify properties of coal used directly in a smelting reduction process, following two experiments were carried out ;
(1)Direct observation of reaction phenomena between molten iron oxide and the coal by using X-ray penetration procedure.
(2)Analysis of producing gases during the reaction and observation of chemical change of molten oxide after the reaction.
Following results can be obtained :
(1)Gas was liberated vigorously at the interface between coal and molten oxide just after the coal was immersed into the oxide.
(2)Main components of the gas were methane and hydrogen.
(3)Reduction fractions on the basis of analysis of gas and molten oxide compositions were agree each other.
(4)Reduction rates of graphite and char were nearly the same.
(5)The reaction rates can be expressed apparently as first order reaction equations.
(7)Apparent reaction equations are 35 and 15 kcal/mole for char and graphite, and coal, respectively.
On the basis of the above experimental results, it is concluded the volatile matter including the coal acts advantageously for smelting reduction.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 大塚 教夫,館 充,雀部 実: "各種コ-クスの熱履歴による黒鉛結晶子の大きさの変化に及ぼすアルカリ吸収の影響" 材料とプロセス. 3. 994 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 大塚 教夫,館 充,雀部 実: "木炭の黒鉛化に及ぼす加熱温度ならびに共存する鉄の影響" 材料とプロセス. 4. 1080 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 大塚 教夫: "各種コ-クスの〓〓〓による黒鉛結晶子の大きさの変化に及ぼすアルカリ吸収の影響" 材料とプロセス. 3. 994 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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