Blast Furnace Ironmaking System Using Partially Reduced Iron Ore Reduced by an Energy Source with Low Carbon Content
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概要
- 論文の詳細を見る
It is possible to improve the productivity and flexibility of the blast furnace operation and also to substitute energy sources in the pig iron production processes by combining the partial reduction process using low carbon content energy sources such as natural gas with the blast furnace process. In this case, the blast furnace process conducts the final reduction and melting of the partially reduced iron ore produced in the partial reduction process. The production rate of the partially reduced iron ore is much higher than that of the fully reduced iron one, because the reduction rate tends to decrease remarkably as the reduction degree rises. As for the technological problems of using the partially reduced ore in the blast furnace process, the deadman temperature might decrease if a large amount of fine iron ore that has been partially reduced is injected. However, if the appropriate amount is used, the reducing agent rate may lower, and productivity can be improved without decreasing the deadman temperature. This method not only reduces energy consumption in the existing blast furnace ironmaking process, but also reduces the energy consumption related to carbon dioxide emission in the total hot metal production processes, including the partial reduction process.
- 一般社団法人日本エネルギー学会の論文
- 2005-02-20
著者
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Kunitomo Kazuya
Environmental and Process Technology Center, Nippon Steel Corporation
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NAITO Masaaki
Environment & Process Technology Center, Nippon Steel Corporation
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TAKAMOTO Yasushi
Environment & Process Technology Center, Nippon Steel Corporation
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YAGI Jun-ichiro
Institute for Advanced Materials Processing, Tohoku University
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Naito M
Environment & Process Technology Center Nippon Steel Corporation
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Yagi Jun-ichiro
Institute For Advanced Materials Processing Tohoku University
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高本 泰
新日本製鉄(株)プロセス技術研究所
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Takamoto Y
Nippon Steel Corp. Chiba Jpn
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Takamoto Yasushi
Environment & Process Technology Center Nippon Steel Corporation
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Naito Masaaki
Nippon Steel Corporation Environment & Process Technology Center
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Kunitomo K
Nippon Steel Corp. Chiba Jpn
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Kunitomo Kazuya
Environment & Process Technology Center
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