METHOD FOR PRODUCING ALKALI METAL SALT OF TUNGSTIC ACID, METHOD FOR PRODUCING TUNGSTEN, AND COMPOSITION CONTAINING ALKALI METAL SALT OF TUNGSTIC ACID

Title:

METHOD FOR PRODUCING ALKALI METAL SALT OF TUNGSTIC ACID, METHOD FOR PRODUCING TUNGSTEN, AND COMPOSITION CONTAINING ALKALI METAL SALT OF TUNGSTIC ACID

Document Type and Number:

WIPO Patent Application WO/2022/113669

Kind Code:

A1

Abstract:

A method for producing an alkali metal salt of tungstic acid according to the present invention comprises a process wherein a molten carbonate, which contains metal ions that serve as an oxidant with respect to an alkali metal carbonate and tungsten, and a tungsten-containing material are brought into contact with each other. The metal ions are supplied, for example, from at least one substance that is selected from the group consisting of metal oxides and metal carbonates. The metal ions may include at least one kind of ions that are selected from the group consisting of Cu ions, Fe ions, Ni ions, Sn ions, Mn ions, V ions, Pb ions, Sb ions and Co ions.

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Inventors:

YASUDA KOUJI (JP)
SUZUKI KOHEI (JP)
HAGIWARA RIKA (JP)

Application Number:

PCT/JP2021/040440

Publication Date:

June 02, 2022

Filing Date:

November 02, 2021

Export Citation:

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Assignee:

UNIV KYOTO (JP)

International Classes:

B09B3/70; C01G41/00; C22B1/00; C22B5/14; C22B34/36

Domestic Patent References:

WO2014142003A1	2014-09-18
WO2010104009A1	2010-09-16

Foreign References:

JP2010512456A	2010-04-22
JPH11505801A	1999-05-25