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最近十年,磁选得到了比较迅猛的发展。这种发展首先表现在用提高磁场力 gradH~2的方法对顺磁材料进行细粒级和微细粒级的磁选作业。但是在弱磁场磁选领域里的进展也是很显著的。1、永磁磁选机的硬磁材料一般来说,在弱磁场磁选机的结构中,永磁已经代替了电磁。因而简化了结构,提高了运转可靠性。一次充磁之后,永久磁铁工作在剩磁感点的附近。由于各极的退磁影响,工作
In the recent ten years, magnetic separation has been more rapid development. This development first manifested in the use of magnetic field to improve the method of gradH ~ 2 paramagnetic material for fine-grained and fine-grained magnetic separation operations. However, the progress in the field of weak magnetic field magnetic separation is also significant. 1, permanent magnetic separator hard magnetic materials In general, in the weak magnetic field separator structure, the permanent magnet has replaced the electromagnetic. Thus simplifying the structure and improving the operational reliability. After a magnetization, the permanent magnet in the vicinity of magnetic induction. Due to the demagnetization of the poles, work