Recycling technique for galvanized sintered NdFeB wastes
A neodymium-iron-boron and waste technology is applied in the field of recycling process of galvanized and sintered neodymium-iron-boron waste, which can solve the problems of environmental pollution, increase manufacturing cost, large loss of rare earth, etc., so as to reduce environmental pollution and save manufacturing cost. Effect
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[0017] Below in conjunction with embodiment the present invention is further described.
[0018] A process for reusing galvanized sintered NdFeB waste, comprising the following steps:
[0019] (i) Put the sintered NdFeB waste material with galvanized layer in an ultrasonic cleaning tank, use a degreaser to clean the dust, oil stains, etc. in the waste material, take it out and dry it after cleaning;
[0020] (ii) Use a jaw crusher to roughly crush the sintered NdFeB waste with a galvanized layer into particles with a particle size of 25mm, and then pass the coarsely crushed particles through a secondary crusher to further crush them into particles below 3mm;
[0021] (iii) Pass the sintered NdFeB waste particles obtained in (ii) through the hydrogen crushing process, and perform hydrogen absorption / dehydrogenation treatment to obtain particles with a particle size of less than 1mm. The saturated hydrogen absorption process is adopted, and the heating and dehydrogenation temper...
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