希土類磁石からの希土類金属回収装置および希土類金属回収方法

Title:

希土類磁石からの希土類金属回収装置および希土類金属回収方法

Document Type and Number:

Japanese Patent JP5709164

Kind Code:

B2

Abstract:

A rare earth metal recovery apparatus and a rare earth metal recovery method, each of which can recover a rare earth metal from a rare earth magnet and enabled the extraction of the rare earth metal from the rare earth magnet with molten magnesium, the separation between magnesium having the extracted rare earth metal contained therein and a residual component, i.e., a Fe-B alloy, of the rare earth magnet, the separation of the magnesium having the extracted rare earth metal contained therein into the rare earth metal and magnesium, and the purification/reuse of the magnesium. The recovery apparatus comprises a rare earth metal extraction reaction vessel and a magnesium collection vessel, wherein the rare earth metal is extracted from the magnet having the rare earth metal contained therein into the molten liquid magnesium in the rare earth metal extraction reaction vessel, the magnet from which the rare earth metal has been extracted and the liquid magnesium which has the rare earth metal dissolved therein are separated from each other, the magnesium is vaporized from the liquid magnesium having the separated rare earth metal contained therein, and the vaporized magnesium is transferred into the magnesium collection vessel, thereby recovering the rare earth metal and the magnesium.

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Inventors:

Miyamoto
Masahide Okamoto
Toru Okabe
Masanori Yamaguchi

Application Number:

JP2011052536A

Publication Date:

April 30, 2015

Filing Date:

March 10, 2011

Export Citation:

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Assignee:

株式会社日立製作所
一般財団法人生産技術研究奨励会
東邦チタニウム株式会社

International Classes:

C22B59/00; B09B3/00; C22B7/00; C22B9/02; C22B26/22

Domestic Patent References:

JP60155633A

Other References:

Toru H.Okabe,Osamu Takeda,Kazuhiro Fukuda,Yoshiaki Umetsu,Direct Extraction and Recovery of Neodymium Metal from Magnet Scrap,Materials Transactions,日本,社団法人日本金属学会,2003年 4月20日,Vo l.44,No.4,p.798-801

Attorney, Agent or Firm:

Aoritsu patent business corporation
Polaire Patent Business Corporation

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