Direct reduction of vanadium oxide in molten CaCl2

被引：0
|
作者：
Suzuki, Ryosuke O. [1 ]
Ishikawa, Hiroyuki [1 ]
机构：
[1] Hokkaido Univ, Dept Mat Sci, Kita Ku, N13W8, Sapporo, Hokkaido 0608628, Japan
来源：
SOHN INTERNATIONAL SYMPOSIUM ADVANCED PROCESSING OF METALS AND MATERIALS, VOL 3: THERMO AND PHYSICOCHEMICAL PRINCIPLES: SPECIAL MATERIALS AND AQUEOUS AND ELECTROCHEMICAL PROCESSING | 2006年
关键词：
calciothermic reduction; vanadium oxide; molten salt electrolysis; deoxidation;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A combined process of electrolysis of CaO in the molten CaCl2 and of calciothermic reduction, so-called OS process, was applied to prepare metallic vanadium directly from V2O3. The fine metallic powder containing 1860 mass ppm oxygen was obtained using 0.5mol%CaO-CaCl2 melt for 10.8 ks at 1173 K. The oxygen level did not decrease further even when twice electricity was applied. Because the metallic vanadium could be electrochemically deoxidized to the level of 10 ppm oxygen from 1.48 %, the large amount of by-product, CaO, due to reduction and the large surface area of the fine particles are the reasons of high oxygen content in the reduced powder.
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页码：597 / +
页数：4
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