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<p>Understanding the H<sub>2</sub>-rich reduction behavior and mechanism of the single-phase pseudobrookite (FeTiO<sub>3</sub>) is essential for the green utilization of the strategic resource vanadium titanomagnetite. In this work, the reduction behavior of FeTiO<sub>3</sub> under CO–H<sub>2</sub> atmospheres was systematically investigated via non‑isothermal thermogravimetric experiments. The study focused on key parameters including the reduction degree, reduction rate, post‑reduction microstructure, and the particle size distribution of the resulting metallic iron and porosity. The results reveal that the promoting effect of H<sub>2</sub>-rich on macroscopic reduction behavior of FeTiO<sub>3</sub> originates from microstructural evolution, linking pore development and iron particle refinement.</p>

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Linking Microstructural Evolution to the Reduction Behavior of FeTiO3 in CO–H2 Atmospheres

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Buxin Chen,
  • Chenguang Bai,
  • Meilong Hu,
  • Mao Chen

摘要

Understanding the H2-rich reduction behavior and mechanism of the single-phase pseudobrookite (FeTiO3) is essential for the green utilization of the strategic resource vanadium titanomagnetite. In this work, the reduction behavior of FeTiO3 under CO–H2 atmospheres was systematically investigated via non‑isothermal thermogravimetric experiments. The study focused on key parameters including the reduction degree, reduction rate, post‑reduction microstructure, and the particle size distribution of the resulting metallic iron and porosity. The results reveal that the promoting effect of H2-rich on macroscopic reduction behavior of FeTiO3 originates from microstructural evolution, linking pore development and iron particle refinement.