选别弱磁性物料或强顺磁性物料的各种磁场磁选机,过去都是采用电磁磁铁构成磁场。近来由于出现了一种CO_5R型高指标的永磁磁铁的新材料(R为稀有元素如钐(Sm)、镨(Pr)等及其混合物),这就有可能制成高磁场强度的强磁场磁选机。但经研究,制造上述磁选机也可利用一般的各向异性永磁磁铁作为磁性源。 Select the magnetic field weak magnetic material or strong paramagnetic materials magnetic separator, the past is the use of electromagnetic magnets constitute a magnetic field. Recently, due to the appearance of a new type of CO_5R high-index permanent magnet magnet (R is a rare element such as samarium (Sm), praseodymium (Pr) and the like) and a mixture thereof, it is possible to produce a strong magnetic field Magnetic separator. However, it has been studied that the magnetic separator can be made by using a general anisotropic permanent magnet as a magnetic source.