公开(公告)号：EP1811062A4

公开(公告)日：2009-04-29

申请号：EP05790573

申请日：2005-10-05

Applicant: TOHO TITANIUM CO LTD ,  OSAKA TITANIUM TECHNOLOGIES CO

Inventor： YAMAGUCHI MASANORI ,  ONO YUICHI ,  KOSEMURA SUSUMU ,  NISHIMURA EIJI ,  OGASAWARA TADASHI ,  YAMAGUCHI MAKOTO ,  HORI MASAHIKO ,  UENISHI TORU

IPC: C25C3/28 ,  C25C3/02

CPC classification number: C22B34/129 ,  C25C3/02 ,  C25C3/28 ,  C25C7/025

Abstract: A metal producing method by molten salt electrolysis carried out with calcium chloride molten salt filled in an electrolytic bath provided with an anode and a cathode, characterized in that either one electrode of the anode and the cathode is provided so as to surround the other electrode, the cathode is provided with at least one communication port to allow communication between an inner area surrounded by the cathode and an outer area, and molten salt is allowed to flow from one area, out of the inner area and the outer area, on the anode-provided side to the other area via the communication port.

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.