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前言稀土永磁铁的最新进展使磁选领域发生了很大变革。八十年代出现的稀土永磁铁提供的磁能积比传统的铁氧体磁铁大一个数量级。这就允许设计出不需运转能量且场强和有效性超过电磁铁的强磁磁路。涉及矿物和金属加工工业的新的应用及设计思想已逐步形成。这项技术也导致了各种
Preface The latest development of rare earth permanent magnet magnetic separation field has undergone great changes. The rare earth permanent magnets appearing in the 1980s provide an order of magnitude larger than the traditional ferrite magnets. This allows the design of a strong magnetic circuit that does not require energy to operate and has more field strength and effectiveness than the electromagnet. New applications and design ideas involving the mineral and metal processing industries have taken shape. This technique has also led to a variety of