在过去几年内,对中磁场磁选机用于分选风化的假象赤铁矿石和其它中等磁性矿石以及从原生和次生工业矿物中除去中等磁性杂质的需求日益增多。有关新型永磁材料的研究,如钐-钴(SmCo)和钕-铁-硼(NdFeB)也取得了巨大的进展,并且研究了磁场最佳布置,以及磁场强度、磁场梯度和工作间隙。在这方面,克洛克纳-洪堡-道依茨韦达格股份公司(KHD Humboldt Wedag AG)研究出用于PERMOS~((R))圆筒磁选机的NdFeB永磁铁的新磁场布置形式,目前已在工业上应用。PERMOS~((R))磁选机内的磁系不再由在径向交替磁化的较大磁块构成,现在由许多小磁棒组成,这些小磁棒的磁化方向逐渐交替变化。本文介绍这一研究成果的重要特征及由此而得的用于干式和湿式分选的PERMOS~((R))OGMS型磁选机的设计特点。 In the past few years there has been an increasing demand for medium magnetic field magnetic separators for sorting weathered hematite and other medium magnetic ores and for removing medium magnetic impurities from primary and secondary industrial minerals. Much progress has also been made on new types of permanent magnet materials, such as SmCo and NdFeB, and the best magnetic field placement, magnetic field strength, magnetic field gradient, and working clearance have been investigated. In this regard, KHD Humboldt Wedag AG has developed a new magnetic field arrangement for NdFeB permanent magnets for PERMOS® (R) cylinder separators , Has been applied in industry. The magnetic system in the PERMOS® (R) magnetic separator is no longer composed of larger magnet blocks that alternate magnetizations in the radial direction and is now composed of many small magnet rods whose magnetization directions alternate alternately. This article presents the important features of this research and the design features of the PERMOS® (R) OGMS Magnetic Separator for both dry and wet separations.