2024-03-28T11:17:55Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/500362022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Direct reduction of vanadium oxide in molten CaCl2Suzuki, Ryosuke O.Ishikawa, HiroyukiCalciothermic ReductionVanadium OxideMolten Salt ElectrolysisDeoxidation431A 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.Maney PublishingJournal Articleapplication/pdfhttp://hdl.handle.net/2115/50036https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/50036/1/MPEM117-2_108-112.pdf0371-9553Mineral Processing and Extractive Metallurgy11721081122008enginfo:doi/10.1179/174328508X290894author