Method for Producing Titanium-containing Electrodeposit and Metal Titanium Electrodeposit

Patent metadata

Field	Value
Publication number	US-2024191385-A1
Application number	US-202218569131-A
Country	US
Kind code	A1
Filing date	Apr 27, 2022
Priority date	Jun 30, 2021
Publication date	Jun 13, 2024
Grant date	—

Abstract

Provided is a method for producing a titanium-containing electrodeposit, which can achieve good refinement by an electrodeposition without using the Kroll method. A method for producing a titanium-containing electrodeposit, including an electrodeposition step of electrodepositing a titanium-containing electrodeposit in a chloride bath, the chloride bath being a molten salt, using an anode including a TiAlO conductive material containing titanium, aluminum, and oxygen, and a cathode, wherein, in the electrodeposition step, a current density of the cathode is in a range of 0.3 A/cm 2 or more and 2.0 A/cm 2 or less, and wherein the chloride bath contains 1 mol % or more of a titanium subchloride.

First claim

1 . A method for producing a titanium-containing electrodeposit, comprising an electrodeposition step of electrodepositing a titanium-containing electrodeposit in a chloride bath, the chloride bath being a molten salt, using an anode comprising a TiAlO conductive material containing titanium, aluminum, and oxygen, and a cathode,
wherein, in the electrodeposition step, a current density of the cathode is in a range of 0.3 A/cm 2 or more and 2.0 A/cm 2 or less, and wherein the chloride bath contains 1 mol % or more of a titanium subchloride.

2 . The method for producing a titanium-containing electrodeposit according to claim 1 , wherein a temperature of the chloride bath is 730° C. or more.

3 . The method for producing a titanium-containing electrodeposit according to claim 1 , wherein the chloride bath contains 6 mol % or more of the titanium subchloride.

4 . The method for producing a titanium-containing electrodeposit according to claim 1 , wherein the method comprises a generation step of generating the titanium subchloride by bringing metal titanium and titanium tetrachloride into contact with each other in a chloride bath, before the electrodeposition step.

5 . The method for producing a titanium-containing electrodeposit according to claim 1 wherein the method comprises a generation step of generating the titanium subchloride by bringing sponge titanium and titanium tetrachloride into contact with each other in a chloride bath, before the electrodeposition step.

6 . The method for producing a titanium-containing electrodeposit according to claim 1 , further comprising an extracting step of heating a chemical blend comprising a titanium ore containing titanium oxide, aluminum, and a separating agent to obtain the TiAlO conductive material, before the electrodeposition step.

7 . The method for producing a titanium-containing electrodeposit according to claim 6 , wherein the separating agent comprises one or more selected from calcium fluoride, calcium oxide, and sodium fluoride.

8 . The method for producing a titanium-containing electrodeposit according to claim 1 , wherein a refined titanium-containing electrodeposit is obtained by performing multiple electrodepositions in the electrodeposition step.

9 . The method for producing a titanium-containing electrodeposit according to claim 8 , wherein the refined titanium-containing electrodeposit has an aluminum content of 1000 ppm by mass or less, an oxygen content of 500 ppm by mass or less, and a chlorine content of 500 ppm by mass or less.

10 . The method for producing a titanium-containing electrodeposit according to claim 9 , wherein the refined titanium-containing electrodeposit has:
a nitrogen content of 0.03% by mass or less; a carbon content of 0.01% by mass or less; an iron content of 0.010% by mass or less; a magnesium content of 0.05% by mass or less; a nickel content of 0.01% by mass or less; a chromium content of 0.005% by mass or less; a silicon content of 0.001% by mass or less; a manganese content of 0.05% by mass or less; and a tin content of 0.01% by mass or less.

11 . A metal titanium electrodeposit,
wherein the metal titanium electrodeposit has an aluminum content of 5 ppm by mass or more and 1000 ppm by mass or less, an oxygen content of 100 ppm by mass or more and 500 ppm by mass or less, and a chlorine content of 500 ppm by mass or less.

12 . The metal titanium electrodeposit according to claim 11 , wherein the metal titanium electrodeposit has:
a nitrogen content of 0.001% by mass or more and 0.03% by mass or less; a carbon content of 0.0004% by mass or more and 0.01% by mass or less; an iron content of 0.010% by mass or less; a magnesium content of 0.05% by mass or less; a nickel content of 0.01% by mass or less; a chromium content of 0.005% by mass or less; a silicon content of 0.001% by mass or less; a manganese content of 0.05% by mass or less; and a tin content of 0.01% by mass or less.

Assignees

• Toho Titanium Co Ltd

Inventors

• Nakajo Yuta
• Kumamoto Kazuhiro
• Suzuki Daisuke
• Yamamoto Masashi
• Horikawa Matsuhide
• Fujii Hideki

Classifications

• C25D3/66

  from melts · CPC title

• C22C14/00

  Alloys based on titanium · CPC title

• C22B34/129

  obtaining metallic titanium from titanium compounds by dissociation, e.g. thermic dissociation of titanium tetraiodide, or by electrolysis or with the use of an electric arc · CPC title

• C22B34/12

  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

• C25D3/56 Primary

  of alloys · CPC title