| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing Ti where the reduction reaction of TiCl<SB>4</SB>is efficiently performed, and a stable operation can be performed on an industrial scale; and to provide a production device used therefor. SOLUTION: The method includes: a reduction stage where Ca in a CaCl<SB>2</SB>-containing molten salt in which Ca is dissolved is allowed to react with TiCl<SB>4</SB>to produce Ti grains in the molten salt; a separation stage where the produced Ti grains are separated from the molten salt; and an electrolysis stage where the molten salt in which Ca concentration is reduced is electrolyzed to increase the Ca concentration. The molten salt in which the Ca concentration is increased using the main electrolytic cell 5 in the electrolysis stage is introduced into a regulation tank 6 having a Ca feed source, and is brought into contact with the Ca feed source, so as to make the Ca concentration in the molten salt constant, and thereafter, it is used for the reduction of TiCl<SB>4</SB>in the reduction stage. When a molten Ca-Mg alloy is used as the Ca feed source, the replenishment of Ca can be easily performed. The method for producing Ti can be easily performed by the production device. COPYRIGHT: (C)2007,JPO&INPIT
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