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    METHOD FOR PRODUCING Ti OR Ti ALLOY THROUGH REDUCTION BY Ca
    1.
    发明公开
    METHOD FOR PRODUCING Ti OR Ti ALLOY THROUGH REDUCTION BY Ca 审中-公开
    过程为生产或TI钛合金用Ca还原

    公开(公告)号：EP1683877A4

    公开(公告)日：2008-06-25

    申请号：EP04792090

    申请日：2004-10-06

    Applicant: OSAKA TITANIUM TECHNOLOGIES CO

    Inventor： OGASAWARA TADASHI ,  YAMAGUCHI MAKOTO ,  HORI MASAHIKO ,  UENISHI TORU ,  URASAKI YUKO ,  TAKEMURA KAZUO

    IPC: C22B34/12

    CPC classification number: C25C3/28 ,  C22B34/1272 ,  C22B34/1295 ,  C25C3/02

    Abstract: A method for producing Ti or a Ti alloy using the reduction by Ca, which comprises a reduction step of holding a molten salt containing CaCl2 and having Ca dissolved therein in a reaction vessel (1) and reacting Ca in the molten salt with a metal chloride containing TiCl4, to generate Ti particles or Ti alloy particles in the molten salt, and a separation step (7) of separating Ti particles or Ti alloy particles being formed in the molten salt from the molten salt. It is preferred to further add an electrolysis step (8) of electrolyzing the CaCl2 withdrawn out of the reaction vessel (1) into Ca and Cl2 and using the formed Ca for the reaction in the reaction vessel (1) for forming Ti or a Ti alloy. In the electrolysis step (8), the use of an alloy electrode comprising a molten Ca alloy as a cathode is effective for the improvement of electric current efficiency and the molten Ca alloy can also be utilized effectively as a medium for transporting Ca in order to enhance a Ca concentration. The above method allows the production of a metallic Ti having high purity with good efficiency at a low cost.

    METHOD FOR PRODUCING Ti OR Ti ALLOY TROUGH REDUCTION BY Ca
    4.
    发明公开
    METHOD FOR PRODUCING Ti OR Ti ALLOY TROUGH REDUCTION BY Ca 审中-公开
    过程为生产或TI钛合金用Ca还原

    公开(公告)号：EP1690951A4

    公开(公告)日：2008-06-25

    申请号：EP04792081

    申请日：2004-10-06

    Applicant: OSAKA TITANIUM TECHNOLOGIES CO

    Inventor： OGASAWARA TADASHI ,  YAMAGUCHI MAKOTO ,  HORI MASAHIKO ,  UENISHI TORU ,  TAKESHITA KATSUNORI

    IPC: C22B34/12 ,  C22B9/10 ,  C25C3/02

    CPC classification number: C25C3/02 ,  C22B34/1268 ,  C22B34/1272 ,  C22B34/1295

    Abstract: A method for producing Ti or a Ti alloy through the reduction of TiCl4 by Ca, which comprises holding a molten salt containing CaCl2 and having Ca dissolved therein in a reaction vessel and reacting Ca in the molten salt with a metal chloride containing TiCl4, to generate Ti particles or Ti alloy particles in the molten CaCl2. The above method allows the enhancement of the feed rate of TiCl4, which is the raw material of Ti, and also allows the continuous operation of the production, and thereby the production of a metallic Ti or a Ti alloy having high purity with good efficiency at a low cost can be attained. Further, the method eliminates the need for the replenishment of expensive metallic Ca and for the operation for separately handling Ca which is highly reactive and difficult to handle.

    METHOD FOR PRODUCING METAL
    5.
    发明公开
    METHOD FOR PRODUCING METAL 审中-公开
    用于生产金属

    公开(公告)号：EP1835049A4

    公开(公告)日：2009-03-25

    申请号：EP05814353

    申请日：2005-12-09

    Applicant: OSAKA TITANIUM TECHNOLOGIES CO

    Inventor： OGASAWARA TADASHI ,  YAMAGUCHI MAKOTO ,  HORI MASAHIKO ,  UENISHI TORU

    IPC: C25C7/04 ,  C25C3/02

    CPC classification number: C25C5/04 ,  C25B1/26 ,  C25C3/02 ,  C25C3/34 ,  C25C7/04

    Abstract: A method for producing a metal by an electrolysis method, characterized in that a porous ceramic article comprising yttria is used as a diaphragm. It is preferred that use is made of a diaphragm comprising a porous ceramic article having a purity of yttria of 90 mass % or higher (more preferably, 99 % or higher), a porosity of 1 % or more and a pore diameter of 20 µm or less, and having a thickness of 0.05 to 50 mm and that use is made of a halide of a metal as an electrolytic bath. Since calcium formed by electrolysis cannot pass through the above diaphragm, the back reaction can be effectively inhibited. The above method can be suitably utilized, in particular, for producing a metal such as calcium or a rare earth element. For example, when the method is applied to the production of calcium, metallic calcium can be produced without the need for enormous heat energy, with ease, at a low cost.

    PROCESS FOR PRODUCING Ti OR Ti ALLOY THROUGH Ca REDUCTION
    7.
    发明公开
    PROCESS FOR PRODUCING Ti OR Ti ALLOY THROUGH Ca REDUCTION 审中-公开
    过程为生产或钛Ti合金中的Ca还原

    公开(公告)号：EP1736557A4

    公开(公告)日：2008-06-25

    申请号：EP04792287

    申请日：2004-10-13

    Applicant: OSAKA TITANIUM TECHNOLOGIES CO

    Inventor： OGASAWARA TADASHI ,  YAMAGUCHI MAKOTO ,  HORI MASAHIKO ,  UENISHI TORU ,  TAKEMURA KAZUO

    IPC: C22B34/12 ,  C22B5/04 ,  C22B26/20 ,  C25C3/02

    CPC classification number: C22B34/1272 ,  C22B5/04 ,  C22B34/129 ,  C22B34/1295 ,  Y02P10/212

    Abstract: A mixed molten salt containing CaCl2 and NaCl is held in reaction vessel (1) at 600°C or below. Not only Na but also TiCl4 as a raw material for Ti is introduced in the reaction vessel (1). Na having been introduced in the reaction vessel (1) replaces Ca to thereby cause Ca to be dissolved in the molten salt, so that the TiCl4 introduced in the molten salt is reduced. Thus, Ti particles are formed. The formed Ti particles together with the molten salt are transferred to separation tank (2) wherein the Ti particles and Na are separated from the molten salt. The remaining molten salt is transferred to electrolyzer tank (3), and high-temperature electrolysis is carried out at over 600°C to thereby form Na. The formed Na is recycled to the reaction vessel (1) and compensates for the Na consumed in the reaction vessel (1). Production of Ti and a Ti alloy through Ca reduction can be performed in an economical manner by circulatory use of Na whose handling is easy while avoiding direct use of highly reactive Ca.

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