PROCESS FOR PRODUCTION OF Ti POWDER

WIPO Patent Application WO/2007/119826

A1

A process for the production of Ti powder which comprises the step (a) of charging a mixture of a Ti material and a CaCl2-containing molten salt into a heater and melting the mixture by heating in an inert gas atmosphere, the step (b) of cooling the molten salt constituting the upper layer of the two-layer melt formed in the step (a), and the step (c) separating and recovering Ti powder contained in the cooled salt and which brings about a fine Ti powder of uniform size. Ti powder can be relatively easily recovered by conducting the step (b) by cooling the molten salt to the melting pointing of the salt or below and conducting the step (c) by dissolving the cooled salt in a solvent such as water or alcohol and collecting Ti powder. The separation and recovery of Ti powder can be carried out by any of centrifugal separation, filtration and sedimentation. When the process is applied to the separation and recovery of Ti from a Ti-containing molten salt which is formed by Ca reduction of TiCl4 and contains CaCl2, high-quality Ti powder can be efficiently obtained with small energy consumption.

OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
TAKEMURA KAZUO (JP)
DAKESHITA KATSUNORI (JP)

PCT/JP2007/058182

October 25, 2007

April 13, 2007

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SUMITOMO TITANIUM CORP (JP)
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
TAKEMURA KAZUO (JP)
DAKESHITA KATSUNORI (JP)

B22F9/06

JP2005264181A	2005-09-29
JP2005264319A	2005-09-29

MORI, Michio (Amagasaki Building 17-23,Higashinaniwa-cho 5-chom, Amagasaki-shi Hyogo 92, JP)

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