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Blast furnaceBlast furnace carbon emissionsEmission mainly come from coke reducing iron ore. As high-quality, low-reactivity coking coal depletes and high-reactivity coke’s safe, low carbon use becomes difficult, matching coke reactivity with burden structure is a key barrier to energy and emissionEmission savings. This study simulated blast furnaceBlast furnace conditions to explore the reductionReduction characteristics of two cokes and two burden structures. Results show that under burden structure O2, using C1 and C2 coke reduced Rd by 13.16% and 7.14%, respectively. Increasing lump-ore proportion enhanced indirect reductionReduction (GR + SLR) and suppressed high-reactivity coke gasification, mitigating its negative effects and enabling “high-quality utilization of inferior coke.” This research offers experimental evidence and processProcess windows for low-carbon blast furnaceBlast furnace operation and resource security.

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Compatibility of Coke Reactivity–Burden Structure Under Simulated Blast Furnace Conditions

  • 会议论文

  • 发表日期：

    2026年

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  • Jinbo Li,
  • Qi Wang,
  • Mingxin Wu,
  • Pei Wang,
  • Weiyu Wang

摘要

Blast furnaceBlast furnace carbon emissionsEmission mainly come from coke reducing iron ore. As high-quality, low-reactivity coking coal depletes and high-reactivity coke’s safe, low carbon use becomes difficult, matching coke reactivity with burden structure is a key barrier to energy and emissionEmission savings. This study simulated blast furnaceBlast furnace conditions to explore the reductionReduction characteristics of two cokes and two burden structures. Results show that under burden structure O2, using C1 and C2 coke reduced Rd by 13.16% and 7.14%, respectively. Increasing lump-ore proportion enhanced indirect reductionReduction (GR + SLR) and suppressed high-reactivity coke gasification, mitigating its negative effects and enabling “high-quality utilization of inferior coke.” This research offers experimental evidence and processProcess windows for low-carbon blast furnaceBlast furnace operation and resource security.