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This study investigates the hydrogen reductionHydrogen reduction of sulfur-bearing iron oreSulfur-bearing iron ore to produce high-quality direct reduced iron (DRI), aiming to provide a feasible alternative for low-carbon and environmentally friendly iron powder production. The research demonstrates that H2 shows good performance in both the reduction and desulfurizationDesulfurization of the ore. By optimizing roasting process parameters, the optimal conditions were determined to be a roasting temperature of 1000 ℃, a roasting time of 90 min, and a H2 concentration of 30%. The experimental results show that the metallic iron yield and desulfurization percentage of the roasted product reached 93.3% and 95.9%, respectively. Moreover, high-quality DRI was obtained through conventional magnetic separation, which met industrial application requirements. The hydrogen reductionHydrogen reduction method not only effectively enhances the reduction of low-grade sulfur-bearing iron oresSulfur-bearing iron ore but also significantly reduces sulfur content, providing a viable technological solution for the comprehensive utilization of high-sulfur iron ores in China.

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Study on the Preparation of Direct Reduced Iron (DRI) from Sulfur-Containing Iron Ore by Hydrogen Reduction

  • 会议论文

  • 发表日期：

    2026年

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  • Junjie Yu,
  • Youxun Dai,
  • Xiaoqing Zhou,
  • Chen Liu

摘要

This study investigates the hydrogen reductionHydrogen reduction of sulfur-bearing iron oreSulfur-bearing iron ore to produce high-quality direct reduced iron (DRI), aiming to provide a feasible alternative for low-carbon and environmentally friendly iron powder production. The research demonstrates that H2 shows good performance in both the reduction and desulfurizationDesulfurization of the ore. By optimizing roasting process parameters, the optimal conditions were determined to be a roasting temperature of 1000 ℃, a roasting time of 90 min, and a H2 concentration of 30%. The experimental results show that the metallic iron yield and desulfurization percentage of the roasted product reached 93.3% and 95.9%, respectively. Moreover, high-quality DRI was obtained through conventional magnetic separation, which met industrial application requirements. The hydrogen reductionHydrogen reduction method not only effectively enhances the reduction of low-grade sulfur-bearing iron oresSulfur-bearing iron ore but also significantly reduces sulfur content, providing a viable technological solution for the comprehensive utilization of high-sulfur iron ores in China.