Influence of Temperature on Carbon Dissolution of Cokes in Molten Iron
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概要
- 論文の詳細を見る
Coke within the blast furnace not only supports the furnace bed and allows gas flow, it also carburises liquid iron. Although carburisation rates of iron by coke vary considerably between cokes, the factors controlling it have not been clearly identified. In this study the rate of carbon dissolution from two cokes prepared from Australian coals, and synthetic graphite, into liquid iron has been measured in the temperature range 1723–1823 K. The apparent activation energy, Ea, obtained for synthetic graphite (Ea=54 kJ mol−1) is in agreement with literature values. The observed Ea values for Cokes 1 and 3 (479 kJ mol−1 and 313 kJ mol−1 respectively) are an order of magnitude larger than those of synthetic graphite. This difference in activation energies is attributed to mineral matter in the coke limiting the interfacial contact area between the carbon source and liquid iron. The interfacial contact area is a function of mineral matter yield and composition, which in turn is a function of temperature. Therefore, as temperature decreases the slag/ash layer produced at the carbon/iron interface can increase in area and viscosity and thus hinder carbon dissolution and increase the apparent activation energy of dissolution.
- 社団法人 日本鉄鋼協会の論文
- 2006-05-15
著者
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Sakurovs Richard
CSIRO Energy Technology
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Sun Haiping
Cooperative Research Centre For Coal In Sustainable Development The School Of Materials Science And
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Cham S.tsuey
Cooperative Research Centre For Coal In Sustainable Development The School Of Materials Science And
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Sakurovs Richard
Csiro
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Sun H
Crc For Coal In Sustainable Development School Of Materials Science And Engineering University Of Ne
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CHAM Sheau
Cooperative Research Centre for Coal in Sustainable Development, The School of Materials Science and
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SAHAJWALLA Veena
Cooperative Research Centre for Coal in Sustainable Development, The School of Materials Science and
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Sahajwalla V
School Of Materials Science And Engineering The University Of New South Wales
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Sahajwalla Veena
Cooperative Research Centre For Coal In Sustainable Development School Of Materials Science And Engi
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