Recycling process of sintering neodymium iron boron discard black wafer
A neodymium iron boron and black flake technology, applied in recycling technology, magnetic materials, electrical components, etc., can solve the problems of limited practical value, increased remelting, complicated surface pretreatment of waste, etc., achieving high recycling rate and saving Manufacturing cost, environment-friendly effect
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[0016] The present invention will be further described below in conjunction with the examples.
[0017] A recycling process for sintered NdFeB scrap black sheets, comprising the following steps:
[0018] (i) Place the black flake waste produced in the machining process in an ultrasonic cleaning tank, and use a degreaser to remove dust, oil, etc. in the waste. During the cleaning process, perform multiple drainage and water washing treatments until the surface of the waste is free of stickiness. After attaching, put it into an oven with a temperature of 200 ° C for 2 hours until it is completely dried;
[0019] (ii) Roughly crush the sintered NdFeB black flake waste into particles with a particle size of 30mm by using a jaw crusher, and further crush the roughly crushed particles into particles below 3mm by a medium crusher;
[0020] (iii) The sintered NdFeB waste particles obtained in (ii) are subjected to hydrogen absorption / dehydrogenation treatment through the hydrogen cru...
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