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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.58  No.3 (2017)  >  pp.367-370

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Calcium Reduction of TiS2 in CaCl2 Melt

N. Suzuki1), M. Tanaka1), H. Noguchi1), S. Natsui1), T. Kikuchi1), R. O. Suzuki1)
1) Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University

In this study, we reduce TiS2 to Ti via both calciothermic reduction and electrolysis in a CaCl2 melt. Upon calcium reduction at 1133 K in CaCl2 melt, the concentration of sulfur decreases to 0.03 mass% S when an amount greater than twice the stoichiometric calcium amount is added. Upon electrolysis reduction at 1173 K in CaCl2-CaS melt, the concentration of sulfur initially decreases significantly to 0.01 mass% S when a sufficiently large amount of electric charge is supplied. Our results indicate that it is possible to achieve sulfur removal via both calciothermic reduction and electrochemical reaction.

titanium disulfide, calciothermic reduction, molten salt electrolysis

Received: September 01, 2016
Accepted: November 14, 2016 , Published online: February 25, 2017



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