钢铁钒钛2025，Vol.46Issue(6)：78-83,6.DOI:10.7513/j.issn.1004-7638.2025.06.009
熔盐协同镁热还原制备高纯金属钒
Preparation of high-purity vanadium metal by molten salt synergistic magnesiothermic reduction
摘要
Abstract
The conventional metallothermic reduction process for vanadium production suffers from high metal consumption,elevated costs,and high oxygen content in the resulting metallic vanadium.While magnesium reduction is thermodynamically capable of reducing oxygen content to 0.01％,the formation of an MgO/MgV2O4 oxide layer severely impedes the reaction kinetics during the actual pro-cess.This study innovatively proposes a novel two-step process:"synergetic magnesiothermic reduc-tion by hydrogen reduction-molten salt."Firstly,low-valent vanadium oxides(V2O3,VO)are prepared via hydrogen reduction to serve as the feedstock for the magnesiothermic reduction step.Subsequently,reactive ZrCl4-KCl molten salt is employed as a medium to disrupt the oxide layer encapsulation effect and overcome the kinetic limitations.This enables the simultaneous magnesium reduction of vanadium oxides and interfacial purification of the oxide layer at a lower temperature.Following optimization of process parameters(Mg addition:35％,reaction time:1 h,temperature:800 ℃),high-purity metallic va-nadium with an oxygen content of approximately 0.16％was successfully produced.关键词
熔盐/镁热还原/VO/金属钒/氧化层Key words
molten salt/magnesiothermic reduction/VO/vanadium metal/oxide layer分类
矿业与冶金引用本文复制引用
于杰,钟大鹏,黄青云,徐海铭,向俊一,喻文昊,吕学伟..熔盐协同镁热还原制备高纯金属钒[J].钢铁钒钛,2025,46(6):78-83,6.基金项目
国家自然科学基金(52404314,52425408) （52404314,52425408）
重庆市自然科学基金(cstc2021jcyj-msxmX0882) （cstc2021jcyj-msxmX0882）
中央高校基本科研业务费(2024CDJXY003). （2024CDJXY003）
