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Electrolytic reduction of V3S4 in molten CaCl2

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Title: Electrolytic reduction of V3S4 in molten CaCl2
Authors: Matsuzaki, Takahiro Browse this author
Natsui, Shungo Browse this author →KAKEN DB
Kikuchi, Tatsuya Browse this author →KAKEN DB
Suzuki, Ryosuke O Browse this author →KAKEN DB
Keywords: molten salt electrolysis
vanadium sulfide
metallic vanadium
calcium chloride
Issue Date: 1-Mar-2017
Publisher: 日本金属学会
Journal Title: MATERIALS TRANSACTIONS
Volume: 58
Issue: 3
Start Page: 371
End Page: 376
Publisher DOI: 10.2320/matertrans.M2016305
Abstract: Metallic vanadium was successfully produced starting from vanadium sulfide by applying electrolysis in molten CaCl2. Vanadium sulfide filled in a cathodic Ti basket and a graphite anode were immersed in the melt of CaCl2-CaS at 1173 K in Ar, and the electrolysis was conducted at a cell voltage of 3.0 V. Sulfide electrolysis did not form carbon deposit and was free from carbon contamination, while carbon powder was formed on the cathode in the oxide electrolysis using the melt of CaCl2-CaO. When the CaS content in the molten CaCl2 increased, electrolysis current increased resulting in fast smelting while the oxygen and sulfur contents in metallic vanadium increased. Oxygen and sulfur contents as low as 3390 ppm and 210 ppm, respectively, were achieved by supplying about four times more electrical charge than stoichiometry.
Type: article
URI: http://hdl.handle.net/2115/73963
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鈴木 亮輔

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