Title:
METHOD AND APPARATUS FOR RECOVERING RARE EARTH ELEMENT BY USING ION LIQUID
Document Type and Number:
Japanese Patent JP2015042782
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for recovering rare earth elements by using an ion liquid which improve the quality of rare earth metals recovered while allowing simplification of the operation process.SOLUTION: A method of recovering rare earth elements from a resource containing iron group elements, boron and rare earth elements by electrolytic deposition of rare earth elements includes an elution step of eluting iron group elements, boron and rare earth elements from a resource to a water-phase solution, an extraction separation step of extracting, after the elution step, rare earth elements selectively, among iron group elements, boron and rare earth elements in the water-phase solution, to an organic-phase solution usable as an electrolysis bath to be used in electrolytic deposition and an electrolytic deposition step of using the organic-phase solution as an electrolysis bath, after the extraction separation step, to deposit rare earth elements electrolytically from the organic-phase solution.
Inventors:
MATSUMIYA MASAHIKO
KAWAKAMI SATOSHI
KAWAKAMI SATOSHI
Application Number:
JP2014152291A
Publication Date:
March 05, 2015
Filing Date:
July 25, 2014
Export Citation:
Assignee:
NAT UNIV YOKOHAMA
DOWA HOLDINGS CO LTD
DOWA HOLDINGS CO LTD
International Classes:
C22B59/00; C22B3/26; C22B3/44; C22B7/00; C25C1/22
Domestic Patent References:
| JP2013014793A | 2013-01-24 | |||
| JP2012087329A | 2012-05-10 |
Other References:
松宮正彦ら: "湿式分離とイオン液体電析を融合した省エネルギー型レアアース回収技術の開発", 電気化学会創立８０周年記念大会講演要旨集, JPN6018007136, 29 March 2013 (2013-03-29), pages 2 - 01, ISSN: 0003747945
Attorney, Agent or Firm:
Ani store Setsuo
Hitoshi Seino
Tomohiro Okuyama
Kazumasa Hashimura
Hitoshi Seino
Tomohiro Okuyama
Kazumasa Hashimura