Reaction Model and Reduction Behavior of Carbon Iron Ore Composite in Blast Furnace
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概要
- 論文の詳細を見る
Decreasing the carbon dioxide emission from steel industries is an important issue. It is considered that due to the high reactivity of carbon iron ore composite, it can control the thermal reserve zone temperature and decrease the consumption of reducing agents in blast furnace. In the present study, a reaction model of the carbon iron ore composite based on a lumped system is proposed to analyze the reduction behavior in the blast furnace. This model is composed of several reaction steps between carbon, iron ore, and gas phase. The carbon solution loss reaction rate of the small particles of reducing agents is determined by the thermogravimetric method. It is found that the gasification of reducing agents is the rate-determining step in the reduction of the carbon iron ore composite. Accordingly, the particle size and reactivity of reducing agents such as coke have an influence on the reduction rate of the carbon iron ore composite. The influence of the gas composition in the atmosphere around the composite on the reduction is analyzed by using the reaction model. Moreover, the reduction behavior of the carbon iron ore composite in the blast furnace is quantitatively examined by comparison of reduction degree and gas composition change in order to investigate the reduction mechanism of reducing agents.
- 社団法人 日本鉄鋼協会の論文
- 2009-06-15
著者
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Watanabe Kentaro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Ueda Shigeru
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Inoue Ryo
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Ariyama Tatsuro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Murakami Taichi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Ueda Shigeru
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Murakami Taichi
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Ariyama Tatsuro
Institute Of Maltidisciplinary Research For Advanced Materials Tohoku University
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Ariyama Tatsuro
Steel Research Laboratory Jfe Steel Corp.
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Inoue Ryo
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Inoue Ryo
Institute For Advanced Materials Processing Tohoku University
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YANAGIYA Kazunari
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Yanagiya Kazunari
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Watanabe Kentaro
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Ueda Shigeru
Inst. Of Multidisciplinary Res. For Advanced Materials (imram) Tohoku Univ.
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Inoue Ryo
Institute Of Multidisciplinary Research For Advanced Materials (imram) Tohoku University
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Ueda Shigeru
Institute Of Multidisciplinary Research For Advanced Materials (imram) Tohoku University
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Inoue Ryo
Inst. Of Multidisciplinary Res. For Advanced Materials Tohoku Univ.
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UEDA Shigeru
Institute of Industrial Science, The University of Tokyo
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