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Title:
METHOD OF HIGH-MELTING-POINT METAL SEPARATION AND RECOVERY
Document Type and Number:
WIPO Patent Application WO/2006/098199
Kind Code:
A1
Abstract:
TiCl4 gas is fed from raw material supply pipe (11) into molten CaCl2 fluid held in reaction vessel (6), so that the TiCl4 is reduced by Ca dissolved in the CaCl2 fluid to thereby form particulate metallic Ti. Any molten CaCl2 fluid having Ti particles mixed therein drawn out downward from the reaction vessel (6) is transferred to separation step (12), wherein the mixture is heated in heating vessel (15). Consequently, the Ti particles are also melted, and by virtue of a specific gravity difference, the molten CaCl2 fluid (16) forms an upper layer while the metallic Ti (17) forms a lower layer to thereby accomplish separation thereof. The lower-layer metallic Ti (17) is taken out through high-melting-point metal outlet port (18) and is solidified into an ingot. The upper-layer molten CaCl2 fluid (16) together with the molten CaCl2 fluid drawn out from the reaction vessel (6) is transferred to electrolysis step (13), and any Ca formed by electrolysis together with CaCl2 is returned into the reaction vessel (6). In the separation step (12) of this production process, the separation recovery technique of the invention is applied, so that Ti or Ti alloy of high quality can be efficiently separated and recovered from CaCl2-containing molten salt with reduced consumption of energy.

Inventors:
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
Application Number:
PCT/JP2006/304456
Publication Date:
September 21, 2006
Filing Date:
March 08, 2006
Export Citation:
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Assignee:
SUMITOMO TITANIUM CORP (JP)
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
International Classes:
C22B34/12; C22B9/02
Foreign References:
JPH028332A1990-01-11
JPH07252550A1995-10-03
JPS317808B1
Attorney, Agent or Firm:
Mori, Michio (Amagasaki Building 17-23, Higashinaniwa-cho 5-chom, Amagasaki-shi Hyogo, JP)
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