Synthesis of vanadium powder by magnesiothermic reduction of V_(2)O_(3)in a reactive molten salt  

作　　者：Da-peng Zhong Gui-shang Pei Jia-long Kang Jun-yi Xiang Cheng Pan Wu-an Gu Xue-wei Lv Lan-jie Li 

机构地区：[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

出　　处：《Journal of Iron and Steel Research International》2023年第4期650-659,共10页

基　　金：the National Key Research and Development Program of China(2018YFC1900500);Technology of Preparing High Purity Metal Vanadium Powder by Magnesium Reduction(2018CDPZH-16);the open project founded by State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization for financial support of this research.

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 V_(2)O_(3)using block Mg is presented herein.Using an auxiliary molten salt,V_(2)O_(3)was successfully transformed into V by Mg reduction.The by-product,MgO,was transformed into MgCl_(2)by adding ZrCl_(4),which prevented the generation of MgV_(2)O_(4)and allowed the reaction to proceed smoothly.The rod-like alloy phases,Zr_(0.03)V_(1.97),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℃),the purity of vanadium exceeded 99 wt.%,and the O content decreased to 0.34 wt.%.

关 键 词：DEOXIDATION Vanadium powder Magnesiothermic reduction Molten salt 

分 类 号：TG14[一般工业技术—材料科学与工程]