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

Patent metadata

Field	Value
Publication number	US-2022152556-A1
Application number	US-202017598386-A
Country	US
Kind code	A1
Filing date	Mar 13, 2020
Priority date	Mar 29, 2019
Publication date	May 19, 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 metal ion selective permeable membrane that separates the raw solution tank and the recovery liquid tank and selectively transmits the metal ions; an anode that is arranged on a side of the metal ion selective permeable membrane close to the raw solution tank; a cathode that is arranged on a side of the metal ion selective permeable membrane close to the recovery liquid tank; a porous current collector that is formed of a conductive material; a first spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the anode; and a second spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the cathode, in which the anode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and the cathode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and two or more of at least one of the raw solution tank and the recovery liquid tank are provided.

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 metal ion selective permeable membrane that partitions the raw solution tank and the recovery liquid tank and selectively transmits the metal ions; an anode that is arranged on a side of the metal ion selective permeable membrane close to the raw solution tank; a cathode that is arranged on a side of the metal ion selective permeable membrane close to the recovery liquid tank; a porous current collector that is formed of a conductive material; a first spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the anode; and a second spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the cathode, wherein the anode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and the cathode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and two or more of at least one of the raw solution tank and the recovery liquid tank are provided.

2 . 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 metal ion selective permeable membrane that partitions the raw solution tank and the recovery liquid tank and selectively transmits the metal ions; an anode that is integrally provided on a side of the metal ion selective permeable membrane close to the raw solution tank; and a cathode that is integrally provided on a side of the metal ion selective permeable membrane close to the recovery liquid tank, wherein two or more of at least one of the raw solution tank and the recovery liquid tank are provided.

3 . The metal ion recovery device according to claim 1 ,
wherein the raw solution tank and the recovery liquid tank are alternately arranged in parallel through the metal ion selective permeable membrane.

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 is configured to extract metal ions included in the metal ion recovery liquid as a solid containing the metal.

7 . A metal ion recovery method comprising:
using the metal ion recovery device according to claim 1 , 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 . The metal ion recovery device according to claim 2 ,
wherein the raw solution tank and the recovery liquid tank are alternately arranged in parallel through the metal ion selective permeable membrane.

9 . The metal ion recovery device according to claim 2 ,
wherein the metal ion is a lithium ion.

10 . A metal ion recovery device unit comprising:
a plurality of the metal ion recovery devices according to claim 2 , 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.

11 . A metal recovery system comprising:
the metal ion recovery device according to claim 2 ; and a refining device that is connected to the recovery liquid tank of the metal ion recovery device and is configured to extract metal ions included in the metal ion recovery liquid as a solid containing the metal.

12 . 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 is configured to extract metal ions included in the metal ion recovery liquid as a solid containing the metal.

13 . A metal recovery system comprising:
the metal ion recovery device unit according to claim 10 ; and a refining device that is connected to the recovery liquid tank of the metal ion recovery device unit and is configured to extract metal ions included in the metal ion recovery liquid as a solid containing the metal.

14 . A metal ion recovery method comprising:
using the metal ion recovery device according to claim 2 , 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.

15 . A metal ion recovery method comprising:
using the metal ion recovery device unit according to claim 5 , 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.

16 . A metal ion recovery method comprising:
using the metal ion recovery device unit according to claim 10 , 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

• C22B26/12

  Obtaining lithium · CPC title

• B01D63/0822

  Plate-and-frame devices · CPC title

• C02F1/4693

  electrodialysis · CPC title

• B01D61/46 Primary

  Apparatus therefor · CPC title

• B01D61/50

  Stacks of the plate-and-frame type · CPC title