METAL RECOVERY DEVICE AND METAL RECOVERY METHOD

Title:

METAL RECOVERY DEVICE AND METAL RECOVERY METHOD

Document Type and Number:

WIPO Patent Application WO/2023/013714

Kind Code:

A1

Abstract:

A metal recovery device including a leaching unit for causing a metal element contained in a composition to directly leach into a hydrophobic deep eutectic solvent and a recovery unit for recovering the metal element by separating the metal element from the deep eutectic solvent, wherein the metal element-containing composition is solid at 25 ˚C and does not contain any inorganic acid, the metal element is formed from a metal, a metal compound, or metal ions, and　the deep eutectic solvent does not contain any inorganic acid.

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Inventors:

GOTO MASAHIRO (JP)
HANADA TAKAFUMI (JP)

Application Number:

PCT/JP2022/029877

Publication Date:

February 09, 2023

Filing Date:

August 04, 2022

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Assignee:

UNIV KYUSHU NAT UNIV CORP (JP)
PRIME PLANET ENERGY & SOLUTIONS INC (JP)
TOYOTA TSUSHO CORP (JP)
TOYOTA MOTOR CO LTD (JP)

International Classes:

C22B3/16; C22B3/02; C22B3/20; C22B7/00; C22B23/06; C22B26/12

Domestic Patent References:

WO2020025970A1

2020-02-06

Foreign References:

US20200399737A1

2020-12-24

Other References:

PEETERS NAND, BINNEMANS KOEN, RIAÑO SOFÍA: "Solvometallurgical recovery of cobalt from lithium-ion battery cathode materials using deep-eutectic solvents", GREEN CHEMISTRY, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 22, no. 13, 6 July 2020 (2020-07-06), GB , pages 4210 - 4221, XP093032363, ISSN: 1463-9262, DOI: 10.1039/D0GC00940G
HANADA TAKAFUMI, GOTO MASAHIRO: "Synergistic Deep Eutectic Solvents for Lithium Extraction", ACS SUSTAINABLE CHEMISTRY & ENGINEERING, AMERICAN CHEMICAL SOCIETY, US, vol. 9, no. 5, 8 February 2021 (2021-02-08), US , pages 2152 - 2160, XP093032365, ISSN: 2168-0485, DOI: 10.1021/acssuschemeng.0c07606

Attorney, Agent or Firm:

SIKS & CO. (JP)

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