PROCESS FOR PRODUCING Ti OR Ti ALLOY BY REDUCTION OF Ca

摘要

A process for producing a high-purity metallic Ti or Ti alloy, comprising, while retaining a molten salt containing CaCl2 and having Ca fused therein in reaction vessel (1), electrolyzing the molten salt of the reaction vessel and feeding a metal chloride containing TiCl4 into the molten salt so as to react with any Ca generated on the negative electrode side by the electrolysis to thereby produce granular Ti or Ti alloy in the molten salt. Further, when the reaction vessel is fitted with diaphragm (4) adapted to, while permitting circulation of the molten salt in the reaction vessel, partition the interior of the reaction vessel into the positive electrode (2) side and the negative electrode (3) side and block the transfer of Ca formed on the negative electrode side of the reaction vessel to the positive electrode side, any back reaction by Ca can be effectively suppressed. Still further, when a conductive porous material is used as the negative electrode, enhanced productivity can be realized.