近年来由于计算机、ＢＰ机、手提电话、汽车电话等通讯设备的普及和节能汽车的快速发展 ,以及钕铁硼永磁材料具有多种优势 ,全球对高性能的稀土永磁材料的需求迅速增长 ,致使稀土永磁材料的产量每年约以30 %的幅度增长。目前国内生产钕铁硼的厂家就有 150家 ,年产量已达 350 0? In recent years, the global demand for high-performance rare earth permanent magnet materials has been rapidly increasing due to the popularization of communication devices such as computers, BP machines, mobile phones and car telephones, and the rapid development of energy-saving automobiles as well as the advantages of NdFeB permanent magnetic materials , Resulting in rare earth permanent magnet material output increased by about 30% each year. At present, there are 150 domestic manufacturers of NdFeB, the annual output has reached 350 0?