发明授权
US06599450B1 Method of producing recycled raw material powder for use in bonded magnet and method of recycling bonded magnet 有权
用于粘结磁体的再生原料粉末的制造方法以及再生粘结磁铁的方法

Method of producing recycled raw material powder for use in bonded magnet and method of recycling bonded magnet
摘要:
A recycling method of producing magnetic material powder from bonded magnets which are produced by mixing magnetic material powder, as raw material powder, with a binder and subjecting a mixture to molding forming, has at least the steps of: (a) separating and collecting the magnetic material powder from the bonded magnets by removing all or a prescribed percentage of the binder contained in the magnets; (b) removing all or a prescribed percentage of the particles of diameter smaller than a prescribed particle diameter from the separated and collected magnetic material powder; and (c) mixing the magnetic material powder, from which the particles of diameter smaller than the prescribed one are removed, with a virgin magnetic material powder in a prescribed mixing ratio, so as to produce a new raw material powder.
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