Title:
METHOD FOR SEPARATING AND RECOVERING HIGH MELTING POINT METAL
Document Type and Number:
WIPO Patent Application WO/2006/098055
Kind Code:
A1
Abstract:
A method for separating and recovering a high melting point metal, wherein a molten salt(for example, calcium chloride) having a high melting point metal (for example, Ti) incorporated therein is heated and molten in an inert gas atmosphere, and the high melting point metal is separated in a liquid phase, to thereby recover the high melting point metal alone form the molten metal. The above method allows the recovery of metallic titanium with an energy consumption being very lower as compared to that in a conventional method, for example, the recovery of a metallic titanium in a sponge form by the vacuum separation used in the Kroll process, and also, allows the production of a titanium having good quality, since the above method is free from the fear of the incorporation of water adversely affecting the quality of titanium. Further, the above method is advantageous in that Ca is removed by evaporation in the method, which Ca is a hindrance when a molten salt containing CaCl2 is electrolyzed in a process for producing Ti by the Ca reduction of TiCl4. Accordingly, the above method can be effectively utilized as a method for separation and recovery, when a high melting point metal, particularly Ti or a Ti alloy, is produced by the Ca reduction of TiCl4.
Inventors:
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
Application Number:
PCT/JP2005/019657
Publication Date:
September 21, 2006
Filing Date:
October 26, 2005
Export Citation:
Assignee:
SUMITOMO TITANIUM CORP (JP)
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
OGASAWARA TADASHI (JP)
YAMAGUCHI MAKOTO (JP)
DAKESHITA KATSUNORI (JP)
HORI MASAHIKO (JP)
International Classes:
C22B34/12; C22B9/02
Foreign References:
| JPS62240704A | 1987-10-21 | |||
| JP2002003959A | 2002-01-09 |
Attorney, Agent or Firm:
Mori, Michio (Amagasaki Building 17-23, Higashinaniwa-cho 5-chom, Amagasaki-shi Hyogo 92, JP)
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