Magnetite magnetic separator is one of the more widely used in the aircraft industry, high versatility, used in the removal of iron powder particles in magnetic separator, widely used in recycling, timber industry, mining, ceramics, chemical, food and other factories. Magnetic separator is suitable for wet magnetic separation of magnetite, pyrrhotite, calcined ore and ilmenite and other materials with particle size below 3mm. It is also used for iron removal of materials such as coal, non-metallic minerals and building materials. The magnetic system of the magnetic separator is made up of high quality ferrite materials or with the rare earth magnetic steel. The average magnetic induction intensity of the previous cylindrical surface is 100-600mT. At present, because of the development of technology, magnetic separator can be made of roll shape, and the intensity of magnetic field is also increased to 1644.3T. has been a higher field intensity at present.