Metal ion recovery device, metal recovery system, and metal ion recovery method

Patent metadata

Field	Value
Publication number	US-2022176320-A1
Application number	US-202017599060-A
Country	US
Kind code	A1
Filing date	Mar 13, 2020
Priority date	Mar 29, 2019
Publication date	Jun 9, 2022
Grant date	—

Abstract

What is provided is a metal ion recovery device including a raw solution tank that is configured to store a metal ion containing raw solution including metal ions, a recovery liquid tank that is configured to store a metal ion recovery liquid including metal ions recovered from the metal ion containing raw solution, a cylindrical metal ion selective permeable membrane that partitions off the raw solution tank and the recovery liquid tank and selectively transmits the metal ions, an anode that is electrically connected to a surface of the selective permeable membrane on a side close to the raw solution tank, and a cathode that is electrically connected to a surface of the selective permeable membrane on a side close to the recovery liquid tank.

First claim

1 . A metal ion recovery device comprising:
a raw solution tank that is configured to store a metal ion containing raw solution including metal ions; a recovery liquid tank that is configured to store a metal ion recovery liquid including metal ions recovered from the metal ion containing raw solution; a cylindrical metal ion selective permeable membrane that partitions off the raw solution tank and the recovery liquid tank and selectively transmits the metal ions; an anode that is electrically connected to a surface of the metal ion selective permeable membrane on a side close to the raw solution tank; and a cathode that is electrically connected to a surface of the metal ion selective permeable membrane on a side close to the recovery liquid tank.

2 . The metal ion recovery device according to claim 1 ,
wherein the recovery liquid tank is cylindrical, and the cylindrical recovery liquid tank is arranged in the raw solution tank.

3 . The metal ion recovery device according to claim 1 ,
wherein two or more cylindrical metal ion selective permeable membranes are provided.

4 . The metal ion recovery device according to claim 1 ,
wherein the metal ion is a lithium ion.

5 . A metal ion recovery device unit comprising:
a plurality of the metal ion recovery devices according to claim 1 , wherein each of the metal ion recovery devices is connected by a pipe connecting the raw solution tanks and a pipe connecting the recovery liquid tanks.

6 . A metal recovery system comprising:
the metal ion recovery device according to claim 1 ; and a refining device that is connected to the recovery liquid tank of the metal ion recovery device and extracts metal ions included in the metal ion recovery liquid as a compound including the metal ions.

7 . A metal ion recovery method comprising:
using the metal ion recovery device according to claim 1 , thereby transmitting metal ions included in the metal ion containing raw solution stored in the raw solution tank of the metal ion recovery device through the metal ion selective permeable membrane, and recovering the metal ions with the metal ion recovery liquid stored in the recovery liquid tank.

8 . A metal recovery system comprising:
the metal ion recovery device unit according to claim 5 ; and a refining device that is connected to the recovery liquid tank of the metal ion recovery device unit and extracts metal ions included in the metal ion recovery liquid as a compound including the metal ions.

9 . A metal ion recovery method comprising:
using the metal ion recovery device unit according to claim 5 , thereby transmitting metal ions included in the metal ion containing raw solution stored in the raw solution tank of the metal ion recovery device unit through the metal ion selective permeable membrane, and recovering the metal ions with the metal ion recovery liquid stored in the recovery liquid tank.

Assignees

• National Institutes For Quantum Science And Tech

Inventors

• Hoshino Tsuyoshi

Classifications

• C02F2201/46115

  Electrolytic cell with membranes or diaphragms · CPC title

• C02F2103/08

  Seawater, e.g. for desalination · CPC title

• C02F2101/10

  Inorganic compounds · CPC title

• C02F2001/46152

  characterised by the shape or form · CPC title

• C02F2001/46133

  characterised by the material · CPC title