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近年来,国内外新型高性能稀土永磁材料的出现和迅速发展,为研制高效永磁磁选设备开辟了一条新途径。我国稀土资源丰富,稀土永磁材料又可批量生产,这就为研制新型永磁设备提供了有利条件。1977年6月,由马钢南山铁矿、北京钢铁研究院和马鞍山矿山研究院共同协作,在研究采用铈钴铜稀土永磁材料进行弱磁场磁选机磁路设计的基础上,采用铈钴铜和铁氧体磁性材料作复合磁系,组装1台φ1050×425毫米试验型筒式磁选机。根据磁选机选别原理,将铈钴铜磁块较集中用在尾矿扫选区,进行局部强化。经强化的尾矿扫选区,圆筒表面(距磁极表面10毫米处)磁场强度达2170奥斯特,比现场用筒式磁选机场强提高500～600奥斯特。
In recent years, the emergence and rapid development of new high-performance rare earth permanent magnet materials at home and abroad has opened up a new way for the development of high efficiency permanent magnetism magnetic separation equipment. Rich in rare earth resources in our country, rare earth permanent magnetic materials can be mass-produced, which provides favorable conditions for the development of new permanent magnet equipment. In 1977 June, by Maanshan Iron and Steel, Nanshan Iron and Steel, Beijing Iron and Steel Research Institute and Maanshan Institute of Mining work together to study the use of rare earth cerium cobalt copper rare earth magnet magnetic separator magnetic circuit design based on the use of cerium cobalt Copper and ferrite magnetic materials for composite magnetic system, the assembly of a φ1050 × 425 mm experimental cartridge magnetic separator. According to the selection principle of magnetic separator, the cerium cobalt copper magnet block is more concentrated in the tailings sweep area for local strengthening. The enhanced tailing sweep area, the cylinder surface (10 mm away from the pole surface) magnetic field strength of 2170 Oe, than the field with a magnetic field of magnetic drum to improve 500 to 600 Oe.