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Title:
METHOD FOR RECOVERING ELEMENT AND APPARATUS FOR RECOVERING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2013/022020
Kind Code:
A1
Abstract:
Provided are a method for recovering an element and an apparatus for recovering an element, which are capable of recovering elements including a high-purity rare earth element at low cost. The method for recovering an element comprises: a step of preparing a molten salt (2) that contains a rare earth element; and a step of having the rare earth element contained in the molten metal (2) deposit on one of a pair of electrode members (7, 27) by controlling the potentials of the pair of electrode members (7, 27) to predetermined values, while having the molten salt (2) in contact with the pair of electrode members (7, 27). Consequently, an element such as a rare earth element to be recovered can be directly recovered from a molten salt (2) in which the element has been dissolved, and thus the processes in the recovery method can be simplified and the cost can be decreased in comparison to conventional wet separation methods and the like.

Inventors:
AWAZU TOMOYUKI (JP)
SUGIHARA TAKAYASU (JP)
MAJIMA MASATOSHI (JP)
NOHIRA TOSHIYUKI (JP)
HAGIWARA RIKA (JP)
KOBAYASHI SEITARO (JP)
Application Number:
PCT/JP2012/070177
Publication Date:
February 14, 2013
Filing Date:
August 08, 2012
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
UNIV KYOTO (JP)
AWAZU TOMOYUKI (JP)
SUGIHARA TAKAYASU (JP)
MAJIMA MASATOSHI (JP)
NOHIRA TOSHIYUKI (JP)
HAGIWARA RIKA (JP)
KOBAYASHI SEITARO (JP)
International Classes:
C25C3/34; C22B7/00; C22B59/00; C22C1/02; C25C7/06
Foreign References:
JP2009287119A2009-12-10
JP2002198104A2002-07-12
Other References:
TOSHIYUKI NOHIRA ET AL.: "Formation of Rare Earth Alloys by Molten Salt Electrochemical Process", MOLTEN SALTS, vol. 47, no. 1, 20 February 2004 (2004-02-20), pages 5 - 12
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
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Claims:



 
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