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Vanadium titanomagnetite (VTM) is a kind of multielement-coexistent mineral throughout the world.1–3) In Panxi-Hongge district of China, there are more than 3.55 billion tons of VTM resources.4) The Hongge vanadium titanomagnetite (HVTM) is not only rich in valuable elements including iron, titanium, and vanadium, but also chromium. The reserve of chromium is 900 Mt, accounting for 68% of the chromium reserve in China.5) Therefore, it is of great importance to study the utilization of this special mineral resource. At present, the blast furnace (BF) process is the main operating means for melting VTM to produce hot metal and slag with the content of TiO2 varying from 22% to 25%, but it is very hard to extract titanium components through traditional separation processes so far.6) Compared with the BF process, several new processes on the basis of direct reduction containing coal of HVTM or other minerals have been widely studied.7–17) Zhao et al.8) surveyed the reduction behaviors of FeO·V2O3 and FeO·Cr2O3 during coal-based direct reduction of HVTM and the effects on the elements distribution in the subsequent magnetic separation. Hu et al.11) Effects of Preheating Temperature and Time of Hongge Vanadium Titanomagnetite Pellet on Its Gas-Based Direct Reduction Behavior with Simulated Shaft Furnace Gases

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Effects of Preheating Temperature and Time of Hongge Vanadium Titanomagnetite Pellet on Its Gas-Based Direct Reduction Behavior with Simulated Shaft Furnace Gases