Rare earth applications can generally be divided into two categories, namely traditional applications and high-tech applications; others are divided into two markets, the traditional market and the high-tech market. From the application field of rare earth consumption in the world in 2000 (see Table 1-15), it can be seen that rare earth new materials and the traditional consumption field are almost equally divided, and rare earths have indeed entered the "new material era" or "high-tech era." Even traditional application areas, there are elements of a new material, such as in the metallurgical industry, not only the rare-earth iron for steel, but also in the form of magnesium, aluminum, light alloys such as "metal material" for the aerospace and automotive; Again glass art There are also rare earth laser glasses. Rare earth permanent magnet materials are mostly used in hard disk drives in personal computers (PCs), active hard disks for portable computers, digital cameras, etc., acoustic vibration components for color TVs, mobile phones, MP3s, optical isolators in optical fiber communication, and automotive motors. . Magnetic resonance imaging (FM 11) and magnetic separator for medical diagnosis are also indispensable areas. A permanent magnet MRI is about 3t NdFeB; magnetic separator is not only used for beneficiation , but also widely used in food and environmental protection industries. Application prospects.

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