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Using biomassBiomass glucose as carbon source, vanadic titanomagnetiteVanadic titanomagnetite (VTM) was carbon coated by hydrothermal carbonizationHydrothermal carbonization, and carbon-coated vanadic titanomagnetiteVanadic titanomagnetite (CCVTM) was obtained. The reduction behaviorsReduction behavior of the CCVTM and VTM at different temperaturesTemperature were systematically studied. The phase, microstructureMicrostructure, and surface composition of the reductionReduction products were characterized by X-ray diffraction (XRDX-Ray Diffraction (XRD)), field emissionEmission scanning electron microscopyScanning Electron Microscopy (SEM) (FE-SEMScanning Electron Microscopy (SEM)), and Energy-Dispersive Spectrometer (EDS). The results show that the surface of CCVTM is covered by 0.3–1 μm carbon spheres. After reductionReduction at 1100 °C for 120 min, the coated carbon spheres still exist, indicating that the carbon spheres have high stability. Iron whisker appeared in the reductionReduction products after reductionReduction of VTM at 800 °C for 120 min. There is no iron whisker in the reductionReduction samples of CCVTM at 700–1200 °C for 120 min. Carbon coating can inhibit the formation of iron whisker during the reductionReduction processProcess.

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Effect of Biochar Coating on Reduction of Vanadic Titanomagnetite

  • 会议论文

  • 发表日期：

    2026年

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  • Suju Hao,
  • Wufeng Jiang,
  • Yice Gao

摘要

Using biomassBiomass glucose as carbon source, vanadic titanomagnetiteVanadic titanomagnetite (VTM) was carbon coated by hydrothermal carbonizationHydrothermal carbonization, and carbon-coated vanadic titanomagnetiteVanadic titanomagnetite (CCVTM) was obtained. The reduction behaviorsReduction behavior of the CCVTM and VTM at different temperaturesTemperature were systematically studied. The phase, microstructureMicrostructure, and surface composition of the reductionReduction products were characterized by X-ray diffraction (XRDX-Ray Diffraction (XRD)), field emissionEmission scanning electron microscopyScanning Electron Microscopy (SEM) (FE-SEMScanning Electron Microscopy (SEM)), and Energy-Dispersive Spectrometer (EDS). The results show that the surface of CCVTM is covered by 0.3–1 μm carbon spheres. After reductionReduction at 1100 °C for 120 min, the coated carbon spheres still exist, indicating that the carbon spheres have high stability. Iron whisker appeared in the reductionReduction products after reductionReduction of VTM at 800 °C for 120 min. There is no iron whisker in the reductionReduction samples of CCVTM at 700–1200 °C for 120 min. Carbon coating can inhibit the formation of iron whisker during the reductionReduction processProcess.