1 Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China 2 Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China 3 College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China 4 The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China 5 Chengde Iron and Steel Group Co., Ltd., HBIS Group Co., Ltd., Chengde 067102, Hebei, China
Synthesis of vanadium powder by magnesiothermic reduction of V2O3 in a reactive molten salt
1 Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China 2 Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China 3 College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China 4 The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China 5 Chengde Iron and Steel Group Co., Ltd., HBIS Group Co., Ltd., Chengde 067102, Hebei, China
摘要 As an important strategic metal, vanadium is generally used to prepare special steels, titanium alloys, and hydrogen storage materials. A new method of producing vanadium (metal) powder from V2O3 using block Mg is presented herein. Using an auxiliary molten salt, V2O3 was successfully transformed into V by Mg reduction. The by-product, MgO, was transformed into MgCl2 by adding ZrCl4, which prevented the generation of MgV2O4 and allowed the reaction to proceed smoothly. The rod-like alloy phases, Zr0.03V1.97, which formed in the presence of excess Mg, may hinder the diffusion of oxygen from the product. The recovery rate of vanadium after separation and purification was approximately 45%–50%, where the main loss occurred during ball milling. Under the optimal conditions (Mg content of 48.3%, reduction time of 1.5 h, and temperature of 850 °C), the purity of vanadium exceeded 99 wt.%, and the O content decreased to 0.34 wt.%.
Abstract：As an important strategic metal, vanadium is generally used to prepare special steels, titanium alloys, and hydrogen storage materials. A new method of producing vanadium (metal) powder from V2O3 using block Mg is presented herein. Using an auxiliary molten salt, V2O3 was successfully transformed into V by Mg reduction. The by-product, MgO, was transformed into MgCl2 by adding ZrCl4, which prevented the generation of MgV2O4 and allowed the reaction to proceed smoothly. The rod-like alloy phases, Zr0.03V1.97, which formed in the presence of excess Mg, may hinder the diffusion of oxygen from the product. The recovery rate of vanadium after separation and purification was approximately 45%–50%, where the main loss occurred during ball milling. Under the optimal conditions (Mg content of 48.3%, reduction time of 1.5 h, and temperature of 850 °C), the purity of vanadium exceeded 99 wt.%, and the O content decreased to 0.34 wt.%.
Da-peng Zhong,Gui-shang Pei,Jia-long Kang, et al. Synthesis of vanadium powder by magnesiothermic reduction of V2O3 in a reactive molten salt[J]. Journal of Iron and Steel Research International, 2023, 30(4): 650-659.
2023, Vol. 30 
