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In recent years, some steel companies have been reducing the proportion of agglomerates (sinter/pellets) in the blast furnaceBlast furnace burden composition while increasing the proportion of natural lump oreNatural lump ore, to achieve cost reduction and emission reduction. However, different lump ores entering the furnace will affect the production of the blast furnaceBlast furnace to varying degrees, and it is essential to conduct a systematic study on the performance of lump ores. This study employed X-ray fluorescence (XRF) spectroscopy, volumetric method, and X-ray diffraction (XRD) to analyze the chemical compositionChemical composition of three types of lump ores. Additionally, the thermal decrepitation behavior, reducibility, and softening-melting-dripping performance of these ores were evaluated. Through a systematic comparison of the three lump ores, this research provides insights for optimizing blast furnaceBlast furnace burden composition and operational practices.

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Research on the Metallurgical Performance of Three Types of Natural Lump Ores for Blast Furnace

  • 会议论文

  • 发表日期：

    2026年

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  • Zefei Zhang,
  • Sibin Zhang,
  • Yong Zhang,
  • Jianlong Wu,
  • Jian Sun,
  • Li Zhu,
  • Wenyun Liu,
  • Donghui Huang

摘要

In recent years, some steel companies have been reducing the proportion of agglomerates (sinter/pellets) in the blast furnaceBlast furnace burden composition while increasing the proportion of natural lump oreNatural lump ore, to achieve cost reduction and emission reduction. However, different lump ores entering the furnace will affect the production of the blast furnaceBlast furnace to varying degrees, and it is essential to conduct a systematic study on the performance of lump ores. This study employed X-ray fluorescence (XRF) spectroscopy, volumetric method, and X-ray diffraction (XRD) to analyze the chemical compositionChemical composition of three types of lump ores. Additionally, the thermal decrepitation behavior, reducibility, and softening-melting-dripping performance of these ores were evaluated. Through a systematic comparison of the three lump ores, this research provides insights for optimizing blast furnaceBlast furnace burden composition and operational practices.