Production of vanadium from V2O5 by combining pre-reduction fluidized bed with FFC Cambridge process
This paper mainly studied preparing metallic vanadium by combining pre-reduction fluidized bed with direct electro-deoxidation (FFC method) process. The V2O5 powder (melting point 690 ℃) acted as raw material in this experiment. Firstly, V2O5 was reduced to V2O3 by fluidized bed reduction with H2 acting as reductant. V2O3 was suitable for direct electroreduction with high melting point (1970 ℃). V2O3 electrodes were gained by molding and sintering and then electrolyzed in molten CaCl2 salt in Ar protective atmosphere. Electrolytic temperatures played a predominant role in the electro-reduction process, and temperatures ranging from 800 to 1000 ℃ were studied in this work. Products were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Metallic vanadium with compact structure and small particle size was obtained when the electro-reduced was conducted at the temperatures below 900 ℃. The content of oxygen could be decreased to less than 1.46％.
V2O5 pre-reduction molten CaCl2 salt FFC method vanadium
CAI Zhuofei ZHANG Zhimei GUO Zhancheng TANG Huiqing
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
国际会议
The 3rd Asian Conference on Molten Salts and Ions Liquids 2011(第三届亚洲熔盐与离子液体会议)
哈尔滨
英文
24-27
2011-01-06（万方平台首次上网日期，不代表论文的发表时间）