RARE EARTH ELEMENT SEPARATION METHOD

Title:

RARE EARTH ELEMENT SEPARATION METHOD

Document Type and Number:

WIPO Patent Application WO/2017/146219

Kind Code:

A1

Abstract:

This rare earth element separation method comprises a step for bringing an organic solvent into contact with a material liquid containing multiple types of rare earth elements to an aqueous solution, thereby extracting the multiple types of rare earth elements in the organic solvent to prepare a starting liquid, and a step for separating at least one type of the rare earth elements by applying a solvent extraction method to the starting liquid, and separates the multiple types of rare earth elements.

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Inventors:

MOCHIDA HIROMI (JP)
MIYAMOTO TAKAHIRO (JP)
NAKAMURA YOSHINORI (JP)

Application Number:

PCT/JP2017/007152

Publication Date:

August 31, 2017

Filing Date:

February 24, 2017

Export Citation:

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Assignee:

MOCHIDA HIROMI (JP)
MITSUBISHI MAT TECHNO CORP (JP)

International Classes:

C22B59/00; C22B3/26

Foreign References:

JPS5480222A	1979-06-26
JPH05105975A	1993-04-27

Other References:

JUNJI SHIBATA ET AL.: "Effects of Various Additives on the Extraction of Pr and Nd with D2EHPA", JOURNAL OF THE JAPAN INSTITUTE OF METALS, vol. 51, no. 8, 1987, pages 749 - 754, XP055142761, ISSN: 1880-6880

Attorney, Agent or Firm:

SHIGA Masatake et al. (JP)

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