Separation recovery method of metal ions, and two-phase separated fluid

Patent metadata

Field	Value
Publication number	US-2024186606-A1
Application number	US-202418430683-A
Country	US
Kind code	A1
Filing date	Feb 2, 2024
Priority date	Sep 29, 2021
Publication date	Jun 6, 2024
Grant date	—

Abstract

Provided is a separation recovery method of metal ions and a two-phase separated fluid. The separation recovery method includes mixing a water phase including two or more kinds of metal ions and an organic compound with an oil phase including an extractant to move metal ions belonging to Group 8 to Group 12 from the water phase to the oil phase, the two or more kinds of metal ions including metal ions belonging to Group 3 to Group 16, and the organic compound coordinated to at least one kind of metal ions among the metal ions. In the two-phase separated fluid, a water phase including two or more kinds of metal ions including metal ions belonging to Group 3 to Group 16 and an organic compound and an oil phase including an extractant are phase-separated and present, and metal ions where the extractant is coordinate-bonded to metal elements belonging to Group 8 to Group 12 are present in the oil phase.

First claim

What is claimed is:

1 . A separation recovery method of metal ions, the separation recovery method comprising:
mixing a water phase including two or more kinds of metal ions (A) and an organic compound (B) with an oil phase including an extractant (C) to move ions of metal elements belonging to Group 8 to Group 12 in a periodic table of elements from the water phase to the oil phase, the two or more kinds of metal ions (A) including ions of metal elements belonging to Group 3 to Group 16 in the periodic table of elements, and the organic compound (B) having a coordinating functional group coordinated to at least one kind of metal ions among the two or more kinds of metal ions (A).

2 . The separation recovery method according to claim 1 ,
wherein the extractant (C) is an acidic extractant.

3 . The separation recovery method according to claim 1 ,
wherein the extractant (C) is represented by Formula (I) or Formula (II),

in Formula (I) and Formula (II),
R 1 represents an alkyl group, R 2 and R 3 represent an organic group and may be the same as or different from each other,
X represents a carboxy group, a sulfonate group, a sulfinate group, a phosphate group, a phosphonate group, or an oxime group, and
Y represents a phosphinate group, a phosphonate group, a phosphate group, a sulfonate group, or an oxime group.

4 . The separation recovery method according to claim 1 ,
wherein the organic compound (B) is a chelating agent.

5 . The separation recovery method according to claim 1 ,
wherein the organic compound (B) includes at least one element of N, O, S, or P in a molecular structure of the organic compound (B).

6 . The separation recovery method according to claim 1 ,
wherein the organic compound (B) is represented by Formula (III),

in Formula (III),
L 1 represents a divalent organic group, L 2 represents a single bond or a divalent organic group, and two L 2 's may be different from each other,
A represents a hydroxy group, an amino group, a carboxy group, a sulfonate group, a sulfinate group, a phosphate group, phosphonic acid, a cyano group, a carbamoyl group, or a thiol group, and two A's may be different from each other,
B represents a monovalent organic group or a hydrogen atom and, in a case where a plurality of B's are included, the plurality of B's may be different from each other, and n represents an integer of 0 to 8.

7 . The separation recovery method according to claim 1 ,
wherein the two or more kinds of metal ions (A) include at least one transition metal element.

8 . The separation recovery method according to claim 1 ,
wherein the metal ions to be moved to the oil phase are ions of two metal elements belonging to different groups among ions of metal elements belonging to Group 8 to Group 11 in the periodic table of elements.

9 . The separation recovery method according to claim 1 ,
wherein the two or more kinds of metal ions (A) are a metal recovery from a waste battery.

10 . A two-phase separated fluid,
wherein a water phase including two or more kinds of metal ions (A) and an organic compound (B) and an oil phase including an extractant (C) are phase-separated and present in a state where the water phase and the oil phase are in contact with each other, the two or more kinds of metal ions (A) including ions of metal elements belonging to Group 3 to Group 16 in a periodic table of elements, and the organic compound (B) having a coordinating functional group coordinated to at least one kind of metal ions among the two or more kinds of metal ions (A), and metal ions where the extractant (C) is coordinate-bonded to metal elements belonging to Group 8 to Group 12 in the periodic table of elements among the two or more kinds of metal ions (A) are present in the oil phase.

11 . The two-phase separated fluid according to claim 10 ,
wherein the extractant (C) is an acidic extractant.

12 . The two-phase separated fluid according to claim 10 ,
wherein the extractant (C) is represented by Formula (I) or Formula (II),

in Formula (I) and Formula (II),
R 1 represents an alkyl group, R 2 and R 3 represent an organic group and may be the same as or different from each other,
X represents a carboxy group, a sulfonate group, a sulfinate group, a phosphate group, a phosphonate group, or an oxime group, and
Y represents a phosphinate group, a phosphonate group, a phosphate group, a sulfonate group, or an oxime group.

13 . The two-phase separated fluid according to claim 10 ,
wherein the organic compound (B) is a chelating agent.

14 . The two-phase separated fluid according to claim 10 ,
wherein the organic compound (B) includes at least one element of N, O, S, or P in a molecular structure of the organic compound (B).

15 . The two-phase separated fluid according to claim 10 ,
wherein the organic compound (B) is represented by Formula (III),

in Formula (III),
L 1 represents a divalent organic group, L 2 represents a single bond or a divalent organic group, and two L 2 's may be different from each other,
A represents a hydroxy group, an amino group, a carboxy group, a sulfonate group, a sulfinate group, a phosphate group, phosphonic acid, a cyano group, a carbamoyl group, or a thiol group, and two A's may be different from each other,
B represents a monovalent organic group or a hydrogen atom and, in a case where a plurality of B's are included, the plurality of B's may be different from each other, and
n represents an integer of 0 to 8.

16 . The two-phase separated fluid according to claim 10 ,
wherein the two or more kinds of metal ions (A) include at least one transition metal element.

17 . The two-phase separated fluid according to claim 10 ,
wherein the metal ions present in the oil phase are ions of two metal elements belonging to different groups among ions of metal elements belonging to Group 8 to Group 11 in the periodic table of elements.

Assignees

• Fujifilm Corp

Inventors

• Kushida Yo
• Mochizuki Hiroaki

Classifications

• H01M10/54 Primary

  Reclaiming serviceable parts of waste accumulators · CPC title

• C22B3/40 Primary

  Mixtures · CPC title

• B01D11/04

  of solutions which are liquid · CPC title

• C07C53/126

  Acids containing more than four carbon atoms · CPC title

• C07C211/07

  containing one, two or three alkyl groups, each having the same number of carbon atoms in excess of three · CPC title