公开(公告)号：US20240084469A1

公开(公告)日：2024-03-14

申请号：US18275509

申请日：2022-02-22

Applicant: Toho Titanium Co., Ltd.

Inventor： Takumi Kaneko ,  Yuta Nakajo ,  Daisuke Suzuki ,  Matsuhide Horikawa ,  Hideki Fujii

IPC: C25D1/04 ,  C25D3/66

CPC classification number: C25D1/04 ,  C25D3/66

Abstract: A method for producing a titanium foil according to the present invention includes an electrodeposition step of performing electrolysis with electrodes including an anode and a cathode using a molten salt bath comprising titanium ions and having at least one molten chloride to deposit metal titanium onto an electrolytic surface of the cathode, wherein the electrodeposition step includes maintaining a ratio of a molar concentration of titanium ions to the total molar concentration of metal ions in the molten salt bath at 7% or more, and maintaining a temperature of the molten salt bath at 510° C. or less, and conducting a current to the electrodes under conditions where a continuous stop time of current conduction is less than 1.0 second, a current density is 0.10 A/cm2 or more and 1.0 A/cm2 or less, and a time for electrodepositing the metal titanium onto the electrolytic surface of the cathode is 120 minutes or less.

公开(公告)号：US11649554B2

公开(公告)日：2023-05-16

申请号：US17267572

申请日：2019-07-18

Applicant: Toho Titanium Co., Ltd.

Inventor： Matsuhide Horikawa ,  Daisuke Suzuki ,  Haruka Yamamoto ,  Hideki Fujii

IPC: C25C5/04 ,  C25C7/06 ,  C25C3/28 ,  C25C7/02 ,  C25C7/08

CPC classification number: C25C3/28 ,  C25C7/025 ,  C25C7/08

Abstract: A method for producing metal titanium by carrying out electrolysis using an anode and a cathode in a molten salt bath, the method using an anode containing metal titanium as the anode, the method comprising a titanium deposition step of depositing metal titanium on the cathode, wherein, in the titanium deposition step, a temperature of the molten salt bath is from 250° C. or more and 600° C. or less, and an average current density of the cathode in a period from the start to 30 minutes later of the titanium deposition step is maintained in a range of 0.01 A/cm2 to 0.09 A/cm2.

公开(公告)号：US20210310140A1

公开(公告)日：2021-10-07

申请号：US17267572

申请日：2019-07-18

Applicant: Toho Titanium Co., Ltd.

Inventor： Matsuhide Horikawa ,  Daisuke Suzuki ,  Haruka Yamamoto ,  Hideki Fujii

IPC: C25C3/28 ,  C25C7/08 ,  C25C7/02

Abstract: A method for producing metal titanium by carrying out electrolysis using an anode and a cathode in a molten salt bath, the method using an anode containing metal titanium as the anode, the method comprising a titanium deposition step of depositing metal titanium on the cathode, wherein, in the titanium deposition step, a temperature of the molten salt bath is from 250° C. or more and 600° C. or less, and an average current density of the cathode in a period from the start to 30 minutes later of the titanium deposition step is maintained in a range of 0.01 A/cm2 to 0.09 A/cm2.

公开(公告)号：US20240191385A1

公开(公告)日：2024-06-13

申请号：US18569131

申请日：2022-04-27

Applicant: Toho Titanium Co., Ltd.

Inventor： Yuta Nakajo ,  Kazuhiro Kumamoto ,  Daisuke Suzuki ,  Masashi Yamamoto ,  Matsuhide Horikawa ,  Hideki Fujii

IPC: C25D3/56 ,  C22C14/00

CPC classification number: C25D3/56 ,  C22C14/00

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/cm2 or more and 2.0 A/cm2 or less, and wherein the chloride bath contains 1 mol % or more of a titanium subchloride.

公开(公告)号：US20240191381A1

公开(公告)日：2024-06-13

申请号：US18287893

申请日：2022-03-14

Applicant: Toho Titanium Co., Ltd.

Inventor： Daisuke Suzuki ,  Yuta Nakajo ,  Kazuhiro Kumamoto ,  Matsuhide Horikawa ,  Hideki Fujii

IPC: C25C3/28

CPC classification number: C25C3/28

Abstract: Provided is a method for producing metal titanium by molten salt electrolysis using a conductive material containing titanium, aluminum, oxygen and other impurities. A method for producing metal titanium, wherein a refining process includes: a rough electrodeposition step of performing a molten salt electrolysis using an electrode containing a TiAlO conductive material in a chloride bath Bf to obtain a titanium-containing electrodeposit TC; and one or more refinement electrodeposition steps of performing a molten salt electrolysis using an electrode containing the titanium-containing electrodeposit TC in a chloride bath Bf, and wherein at least one of the chloride bath Bf used for the rough electrodeposition step and the chloride bath Bf used for the refinement electrodeposition step contains 30 mol % or more of magnesium chloride.