Coke Combustion Rate with the Presence of Hematite in Quasi-particles

Ziming Wang, Shunsuke Tsutsumi, Takayuki Maeda, Ko Ichiro Ohno, Kazuya Kunitomo

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The coke combustion rate in the iron ore sintering process is one of the most important factors affecting the quality and productivity of iron ore sintering. The purpose of this study was to investigate the combustion rate of coke in the presence of hematite to simulate the actual conditions in a sinter machine. The experimental samples were prepared by mixing coke powder with hematite powder. Experiments were carried out under an air or N2 atmospheres at 1 073, 1 173 and 1 273 K. From the results of the reaction curves, the coke combustion rates were analyzed using an unreacted-core model with one reaction interface. From the kinetic analysis, it was found that the reaction rate constant kc (m/s) and effective diffusion coefficient De (m2/s) of the sample were both affected by the experimental temperature. Furthermore, the De value of the sample was affected by the amount of coke. However, the kc of the sample was not affected by this.

本文言語英語
ページ(範囲)2964-2970
ページ数7
ジャーナルisij international
61
12
DOI
出版ステータス出版済み - 2021

!!!All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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