Title:
METHOD FOR RECYCLING R-T-B SINTERED MAGNET SCRAP AND METHOD FOR MANUFACTURING R-T-B SINTERED MAGNET USING THE SAME
Document Type and Number:
Japanese Patent JP2023140253
Kind Code:
A
Abstract:
To easily separate an oxide from an alloy in a recycling method in which R-T-B sintered magnet scrap is melted in a melting furnace.SOLUTION: A recycling method for an R-T-B sintered magnet scrap includes a scrap preparation step of preparing an R-T-B sintered magnet scrap, a melting step of obtaining a scrap alloy by cooling the molten metal obtained by melting the R-T-B based sintered magnet scrap in a melting furnace, and a separation step of placing the scrap alloy in a processing container, setting the temperature in the processing container to 20°C or more and 300°C or less and the water vapor partial pressure to 3kPa or more and 500kPa or less, and separating an oxide from the scrap alloy.SELECTED DRAWING: Figure 1
Inventors:
MURATA TSUYOSHI
Application Number:
JP2022105726A
Publication Date:
October 04, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
PROTERIAL LTD
International Classes:
H01F41/02; B22F1/00; B22F3/00; B22F9/04; C22B1/00; C22B7/00; C22B59/00; C22C33/02; H01F1/057; H01F41/00
Attorney, Agent or Firm:
Seiji Okuda
Shuichi Kita
Shuichi Kita
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