Mining, Minerals Processing and Metallurgical Engineering

Enhancing iron and titanium recovery efficiency via coal-based direct reduction of vanadium-titanium magnetite raw ore

  • 王正豪,陈司宇,陈 良,梁 斌,罗冬梅
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  • School of Chemical Engineering, Sichuan University, Chengdu 610065, China

Online published: 2025-11-04

Abstract

An approach for coal-based direct reduction of vanadium-titanium magnetite (VTM) raw ore was proposed. Under the optimal reduction conditions with reduction temperature of 1140 °C, reduction time of 3 h, C-to-Fe molar ratio of 1.2?1, and pre-oxidation temperature of 900 °C, the iron metallization degree is 97.8%. Ultimately, magnetic separation yields an iron concentrate with an Fe content of 76.78 wt.% and efficiency of 93.41%, while the magnetic separation slag has a Ti grade and recovery of 9.36 wt.% and 87.07%, respectively, with a titanium loss of 12.93%. This new strategy eliminates the beneficiation process of VTM raw ore, effectively reduces the Ti content in the iron concentrate, and improves the comprehensive utilization of valuable metals.

Cite this article

王正豪,陈司宇,陈 良,梁 斌,罗冬梅 . Enhancing iron and titanium recovery efficiency via coal-based direct reduction of vanadium-titanium magnetite raw ore[J]. Transactions of Nonferrous Metals Society of China, 2024 , 34(10) : 3480 -3492 . DOI: 10.1016/S1003-6326(25)66894-4

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