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Based on the high volatile content ofDirect reduction biomassBiomass, gasification mainly occurs in the first 10 min, and unmatched with the reduction of iron ore, this study proposed a new method to enhance the reduction of iron ore by biogas circulation. The effect of biogas circulation on the reduction effect was mainly investigated, and compared with conventional reduction, the biogas circulation resulted in a higher reduction efficiency, increased the concentration of the reducing atmosphere, and altered the kinetic conditions of ore reduction. After 10 min, the metallization rate of iron ore increased from 82.01 to 94.81% under the condition of 30 min of biogas circulation. This study provides a good example of the efficient utilization of biomassBiomass energy and the reduction of carbonLow carbon reduction emissions in the DRI process.

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Role of Biogas Recirculation in Direct Reduction of Iron Ore with Woody Biomass

  • 会议论文

  • 发表日期：

    2025年

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  • Yang Shu,
  • Bing Deng,
  • Hongrao Zhang,
  • Lingyun Yi,
  • Yating Zhang,
  • Zhiwei Peng

摘要

Based on the high volatile content ofDirect reduction biomassBiomass, gasification mainly occurs in the first 10 min, and unmatched with the reduction of iron ore, this study proposed a new method to enhance the reduction of iron ore by biogas circulation. The effect of biogas circulation on the reduction effect was mainly investigated, and compared with conventional reduction, the biogas circulation resulted in a higher reduction efficiency, increased the concentration of the reducing atmosphere, and altered the kinetic conditions of ore reduction. After 10 min, the metallization rate of iron ore increased from 82.01 to 94.81% under the condition of 30 min of biogas circulation. This study provides a good example of the efficient utilization of biomassBiomass energy and the reduction of carbonLow carbon reduction emissions in the DRI process.