Metal titanium production apparatus and method

Patent metadata

Field	Value
Publication number	US-2021230715-A1
Application number	US-201915734754-A
Country	US
Kind code	A1
Filing date	Apr 25, 2019
Priority date	Jun 6, 2018
Publication date	Jul 29, 2021
Grant date	—

Abstract

A metal titanium production apparatus includes: a reductor that subjects titanium tetrachloride to a reduction process in presence of bismuth and magnesium to obtain a liquid alloy containing titanium and the bismuth; a segregator that subjects the liquid alloy to a segregation process to obtain a precipitate; and a distillator that subjects the precipitate to a distillation process to obtain metal titanium, and the distillator sets an atmosphere so as to preferentially vaporize the bismuth attached to the precipitate and then sets the atmosphere so as to vaporize the bismuth forming the precipitate.

First claim

1 . A metal titanium production apparatus, comprising:
a reductor that subjects titanium tetrachloride to a reduction process in presence of bismuth and magnesium to obtain a liquid alloy containing titanium and the bismuth; a segregator that subjects the liquid alloy to a segregation process to obtain a precipitate; and a distillator that subjects the precipitate to a distillation process to obtain metal titanium, wherein the distillator sets an atmosphere so as to preferentially vaporize the bismuth attached to the precipitate and then sets the atmosphere so as to vaporize the bismuth forming the precipitate.

2 . The metal titanium production apparatus according to claim 1 , further comprising
a concentrator that separates the bismuth attached to the precipitate from the precipitate to obtain a concentrated intermetallic compound,
wherein
the distillator subjects the concentrated intermetallic compound to the distillation process instead of the precipitate.

3 . The metal titanium production apparatus according to claim 1 , wherein
the distillator sets the atmosphere for preferentially vaporizing the bismuth attached to the precipitate such that the precipitate becomes 800° C. or a temperature in its vicinity.

4 . The metal titanium production apparatus according to claim 3 , wherein
the distillator sets the atmosphere for vaporizing the bismuth forming the precipitate such that the precipitate becomes 1000° C. or a temperature in its vicinity.

5 . The metal titanium production apparatus according to claim 3 , wherein
the distillator sets the atmosphere for vaporizing the bismuth forming the precipitate such that the precipitate becomes 1100° C. or a temperature in its vicinity.

6 . The metal titanium production apparatus according to claim 3 , wherein
the distillator sets the atmosphere for vaporizing the bismuth forming the precipitate such that the precipitate becomes 1000° C. or a temperature in its vicinity and then sets the atmosphere for vaporizing the bismuth forming the precipitate such that the precipitate becomes 1100° C. or a temperature in its vicinity.

7 . The metal titanium production apparatus according to claim 1 , wherein
the distillator heats the precipitate at a first temperature such that a structure of titanium contained in the precipitate obtained by the segregator is maintained and vaporization of bismuth from a surface of the precipitate is maintained by bismuth diffusing to the surface from an inside of the precipitate, and then heats the precipitate at a second temperature higher than the first temperature.

8 . A metal titanium production method, comprising:
a reduction step of subjecting titanium tetrachloride to a reduction process in presence of bismuth and magnesium to obtain a liquid alloy containing titanium and the bismuth; a segregation step of subjecting the liquid alloy to a segregation process to obtain a precipitate; and a distillation step of subjecting the precipitate to a distillation process to obtain metal titanium,
wherein
in the distillation step, an atmosphere around the precipitate is set so as to preferentially vaporize the bismuth attached to the precipitate and then is set so as to vaporize the bismuth forming the precipitate.

9 . The metal titanium production method according to claim 8 , wherein
in the distillation step, the precipitate is heated at a first temperature such that a structure of titanium contained in the precipitate obtained through the segregation step is maintained and vaporization of bismuth from a surface of the precipitate is maintained by bismuth diffusing to the surface from an inside of the precipitate, and then is heated at a second temperature higher than the first temperature.

Assignees

• Univ Kyoto
• Ihi Corp

Inventors

• Uda Tetsuya
• Kunitomo Yoshinobu
• Kishimoto Akihiro
• Kumamoto Kazuhiro
• Sato Akihiro
• Dodo Yasushi
• Hashimoto Takuya
• Yoshimura Akihiko

Classifications

• Y02P10/20

  Recycling · CPC title

• C22B34/12 Primary

  Obtaining titanium {or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08} · CPC title

• C22B34/1277 Primary

  using other metals, e.g. Al, Si, Mn · CPC title

• C22B34/1272 Primary

  reduction of titanium halides, e.g. Kroll process · CPC title

• C22B34/1295

  Refining, melting, remelting, working up of titanium · CPC title