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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.58  No.3 (2017)  >  pp.341-349

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Reduction of CaTiO3 in Molten CaCl2 - as Basic Understanding of Electrolysis

Ryosuke O. Suzuki1), Hiromi Noguchi1), Hiromasa Hada1), Shungo Natsui1), Tatsuya Kikuchi1)
1) Faculty of Engineering, Hokkaido University

Electrochemical decomposition of CaTiO3 at the cathode was examined in a scheme of titanium metal production from natural deposit, Ilmenite (TiFeO3). Based on the possible precipitation of CaTiO3 from TiFeO3, the electrochemical decomposition of CaTiO3 is here examined using combination of the calciothermic reduction and the electrolysis of CaO in the same molten salt. Inhomogeneous reduction in the cathodic basket is related with buoyancy of Ca and insufficient dehydration. By optimizing the cooling conditions, CaO content in the molten salt, and dehydration method, an industrial level of 0.42 mass%O could be achieved as powder form.

calcium chloride, calciothermic reduction, molten salt electrolysis, titanium production

Received: September 05, 2016
Accepted: October 17, 2016 , Published online: February 25, 2017



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