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.

公开(公告)号：EP1944383A4

公开(公告)日：2009-12-02

申请号：EP06782859

申请日：2006-08-22

Applicant: OSAKA TITANIUM TECHNOLOGIES CO

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

IPC: C22B34/12 ,  C22B5/04 ,  C25C7/00

CPC classification number: C25C3/28 ,  C22B34/1272 ,  C22B34/129 ,  C22B34/1295 ,  C25C3/02 ,  C25C7/005 ,  C25C7/06

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.