Title:
METHOD FOR RECYCLING SLURRY, METHOD FOR MANUFACTURING RARE-EARTH BASED SINTERED MAGNET, AND APPARATUS FOR RECYCLING SLURRY
Document Type and Number:
WIPO Patent Application WO/2011/125578
Kind Code:
A1
Abstract:
Disclosed is a method for manufacturing rare-earth based sintered magnet which can eliminate the step of reclaiming a molded defective of rare-earth based sintered magnet resulting from wet molding thereof and which is preferred as a method of preparing a high-performance rare-earth based sintered magnet that has a reduced oxygen content. Also disclosed is a method and apparatus for recycling slurry which are employed for the manufacturing method. The method for recycling slurry includes a step of disintegrating and crushing a molded piece in mineral oil and/or synthetic oil to provide the resultant as recycled slurry, the molded piece having been produced in a magnetic field by wet-molding a slurry made of alloy powder for rare-earth based sintered magnet and mineral oil and/or synthetic oil.
Inventors:
MOCHIZUKI Mitsuaki (Ltd. Kumagaya Works 5200, Mikajiri, Kumagaya-sh, Saitama 77, 〒3608577, JP)
Application Number:
JP2011/057540
Publication Date:
October 13, 2011
Filing Date:
March 28, 2011
Export Citation:
Assignee:
Hitachi Metals, Ltd. (1-2-1, Shibaura Minato-k, Tokyo 14, 〒1058614, JP)
日立金属株式会社 (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 〒1058614, JP)
日立金属株式会社 (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 〒1058614, JP)
International Classes:
H01F41/00; B22F3/00; B22F8/00; B22F9/00; C22C33/02; C22C38/00; H01F1/08; H01F41/02
Attorney, Agent or Firm:
TSUJITA Takashi et al. (KT building 4F, 11-12 Takada 3-chome, Toshima-k, Tokyo 33, 〒1710033, JP)
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Claims: