The permanent magnet iron remover is composed of a high residual magnetism, high coercive rare earth magnetic material NdFeB and ferrite to form a strong magnetic field, which is used to absorb ferromagnetic debris, the whole machine is not energized, no energy consumption. . The permanent magnet iron remover can be divided into automatic unloading iron, manual unloading iron, manual unloading iron, etc. according to the method of unloading iron.

　　1. Manual permanent magnet separator. When the manual permanent magnet separator is unloading iron, the iron is scraped off the magnetic field by means of a squeegee, and the iron removal is performed, but generally it cannot be used in the case of a large iron.

　　2. Manual unloading type permanent magnet iron remover. It is the simplest of all iron removers, low in price, small in space and easy to manufacture, install and maintain. According to the configuration, there are roughly two types, that is, the suspension type and the bottom type. The suspension fixed plate type iron remover is adapted to be mounted above the tape conveyor belt conveyor, and the bottom fixed plate type iron remover is adapted to be mounted below the lower hopper or chute. This type of de-ironing device is suitable for applications where the iron-containing impurities are small and small, and the thickness of the conveying stream is preferably not more than 100 mm. When the equipment is working, the iron inclusions are directly attracted to the magnetic plate, and it is more laborious to perform manual manual unloading of iron.

　　3. Belt type permanent magnet separator. The belt type permanent magnet separator is characterized by automatic unloading of iron, constant magnetic field, no change of cold and hot state, less failure points, and is more common under the bandwidth of 1200 mm. Since the development of magnetic shielding technology is still not enough, it brings a lot of troubles to manufacturing, transportation, installation, operation and maintenance. For example, a large piece of iron is sucked into the magnetic box and there is a problem that it may not be thrown away, thereby pinching the belt to burn the motor. At the same time, it is difficult to remove, and it may cause damage to the magnetic block, so it is limited in large-scale applications.

　　Iron removers are widely used in power plants, mining, ceramics, metallurgy, coal preparation plants, glass, cement, chemicals, building materials, food and feed processing industries. In the emerging waste treatment industry, steel in iron recycling waste is also required. Especially in the coal and ceramic industry, iron impurities such as detonators and iron removers in coal not only affect safety production, but also affect the quality and reputation of exported coal.