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我国大中型磁铁矿山中,矿石贫化现象较为普遍,在粗碎后采用大型磁滚筒预选,剔除-350mm大块脉石,使占原矿量10～20％的合格尾矿免除进一步破碎、磨矿及选矿工序,节能节电,经济效益显著。设计大型永磁磁滚筒应考虑与分选大块矿石相适应的磁场特性曲线的分布特点、磁场深度、磁场力等主要因素。CT—1416永磁磁滚筒采用高磁能积的稀土磁钢与铁氧体材料组成复合磁系,为目前工业生产中使用的规格最大、磁场力最强的干式永磁磁滚筒,具有国际先进水平,对混入围岩较多的磁铁矿选矿厂具有广阔的应用前景。
Large and medium-sized magnetite mine in China, the phenomenon of ore depletion is more common in the coarse crushing large magnetic drum preselected, excluding -350mm large gangue, so that the amount of ore 10 to 20% of eligible tailings from further crushing, grinding And beneficiation process, energy saving, significant economic benefits. The design of large permanent magnetism drum should consider the distribution characteristics of the magnetic field characteristic curves suitable for sorting large ores, the magnetic field depth, the magnetic field force and other major factors. CT-1416 permanent magnet roller using high energy product of rare earth magnets and ferrite materials composite magnetic system, is currently used in industrial production specifications of the largest magnetic field strongest dry permanent magnet roller, with the international advanced Level, mixed with more rock magnetite beneficiation plant has broad application prospects.