Ion exchange resin and method for adsorbing and separating metal

Patent metadata

Field	Value
Publication number	US-2017166995-A1
Application number	US-201515321286-A
Country	US
Kind code	A1
Filing date	Jun 26, 2015
Priority date	Jun 26, 2014
Publication date	Jun 15, 2017
Grant date	—

Abstract

Provided is a system for efficiently recovering trace metal from a large amount of a raw material, such as when trace metal is recovered from nickel oxide ore. This ion exchange resin has, on a carrier, an amide derivative represented by the following general formula. In the formula, R1 and R2 represent the same or different alkyl groups, R3 represents a hydrogen atom or an alkyl group, and R4 represents a hydrogen atom or an arbitrary group, other than an amino group, bonded to α carbon as an amino acid. The amide derivative is preferably a glycineamide derivative. The carrier preferably includes a primary amine and/or a secondary amine.

First claim

1 . A method for adsorbing and separating a metal, the method comprising:
applying an acid solution containing one or more metals selected from cobalt, nickel, scandium and rare earth elements to an ion exchange resin to adsorb the metal on the ion exchange resin, and recovering the metal adsorbed on the ion exchange resin, wherein the ion exchange resin has an amide derivative represented by the following general formula (I) on a carrier, and the carrier includes 3-aminopropyl silica gel and/or 3-(ethylenediamino)propyl silica gel:

(wherein, R 1 and R 2 each represent the same or different alkyl groups,
the alkyl group is optionally a straight chain or a branched chain,
R 3 represents a hydrogen atom or an alkyl group, and
R 4 represents a hydrogen atom or an arbitrary group other than an amino group bonded to α carbon as an amino acid.)

2 . The method for adsorbing and separating a metal according to claim 1 , wherein the amide derivative is a glycinamide derivative.

3 . The method for adsorbing and separating a metal according to claim 1 , the method comprising adsorbing a metal contained in an acid leaching solution obtained by high pressure acid leaching of nickel oxide ore on the ion exchange resin and recovering the metal adsorbed on the ion exchange resin.

4 . (canceled)

5 . (canceled)

6 . The method for adsorbing and separating a metal according to claim 2 , the method comprising adsorbing a metal contained in an acid leaching solution obtained by high pressure acid leaching of nickel oxide ore on the ion exchange resin and recovering the metal adsorbed on the ion exchange resin.

Assignees

• Univ Kyushu Nat Univ Corp
• Sumitomo Metal Mining Co

Inventors

• Goto Masahiro
• Kubota Fukiko

Classifications

• C22B3/06

  in inorganic acid solutions {, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions} · CPC title

• B01J47/12

  characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes (electrodialysis or electro-osmosis B01D61/42) · CPC title

• B01J45/00

  Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties (ion-exchange chromatography processes B01D15/36) · CPC title

• C22B3/42 Primary

  by ion-exchange extraction · CPC title

• Y02P10/20

  Recycling · CPC title