Classification of permanent magnetic separators
Permanent magnet separators employ high coercive force and high remanence special permanent magnets such as "Neodymium-Iron-Boron" to compose composite magnetic systems. With maintenance-free, strong magnetic force, long life, easy installation, easy to use, reliable operation and so on. It is suitable for removing iron from non-magnetic materials on belt conveyors, vibratory conveyors, electromagnetic vibrating feeders and chutes. Remove 0.1-35 kg of ferromagnetic material, the internal permanent magnetic system service life of more than 10 years. When the permanent magnets absorb a large amount of ferromagnetic materials, they are manually removed with a non-magnetic scraper or removed with gloves. This is suitable for applications where continuous operation and less iron are involved. Permanent magnet separators include pipes, barriers, and permanent magnet rollers. In addition, there are permanent magnetic iron remover according to the way of iron can be divided into automatic unloading iron belt, plate manual unloading iron, manual unloading iron.
Pipeline permanent magnetic iron remover. Pipeline separators are wet removal equipment. The device is mainly composed of a magnetic rod inserted into the human pipeline. This equipment is suitable for iron removal in slurry, especially for the removal of fine iron particles. Mainly used in cement, grain, glass, chemical and other industries except iron, its structure is simple, but it is generally manual unloading iron (also has a pipe-type electromagnetic iron remover). The structure has 1 iron remover external iron separator attached to one side or both sides of the pipe (usually the pipe is rectangular); 2 iron remover built-in iron remover is located in the center of the pipe is conical (generally the pipe is round).
Grid permanent magnet separator. This iron remover uses multiple magnetic bars spaced apart. Since the deflector is arranged above the grid, it can increase the probability of the inclusion of iron in the material by the magnet bar. In order to adapt the device to different feeders, the device can be customized into round grids and square grids according to user requirements. The device is suitable for iron removal applications for materials up to 12.5 mm.
Permanent magnet drum remover. It consists mainly of a multipole fixed magnetic system and a cylinder made of a non-magnetic material. The angle of the fixed magnetic system is 180. Or 360. The cylinder rotates around the magnet system or the entire magnet cylinder rotates. It can be used to replace the driving wheel of belt conveyor. It can not only drive the belt to convey the material, but also play the role of sorting. It plays an important role in steel slag recycling, mine iron sand and coarse selection, and non-magnetic material impurity removal. Role, simple operation. The equipment is suitable for removing iron in the process of conveying coarse particles below 50 mm.
Band type permanent magnetic separator. The belt type permanent magnet separator has the characteristics of automatic iron unloading, constant magnetic field, no change of cold and hot state, and few points of failure. It is more commonly used below 1 200 mm bandwidth. As the current development of magnetic shielding technology does not pass, it has brought a lot of trouble to manufacturing, transportation, installation, operation and maintenance. For example, if large iron is sucked onto the magnetic box, there is a problem that it may not be thrown off, and the belt may burn the motor. At the same time, it is difficult to remove, and may cause damage to the magnetic block, so it is subject to certain restrictions in the application of large specifications.
Plate type iron unloading permanent magnet separator. In all the iron remover is simple, low price, small footprint, easy installation and maintenance. According to the configuration can be roughly divided into two types, that is, fixed suspension and bottom fixed. Suspended fixed plate remover is suitable for mounting on the tape conveyor belt conveyor, while the bottom fixed plate remover is suitable for mounting under the lower hopper or chute. This type of iron removal equipment is suitable for applications where iron impurities are small and less, and the transport stream thickness is better than 100 mm. When the device is in operation, iron inclusions are directly attracted to the magnetic plate, and regular manual unloading of the iron is required, which is laborious.
Manual permanent magnet remover. The manual type permanent magnetic iron remover removes iron by using a handle to remove the iron by using a scraper to scrape the iron outside the magnetic field, but generally it cannot be used in occasions with large iron pieces. Permanent magnet iron remover advantages:
The magnetic attraction is extremely strong, the work performance is stable, the structure is simple and compact, and the energy consumption is small.
Light weight, easy operation and maintenance.
In the event of a sudden power outage during the production process, the ferrous material held by the iron separator will not be re-arranged in the raw material.
The disadvantages of permanent magnetic iron remover are:
The increase in magnetic induction is limited by technology.
It is inconvenient to transport and install, and it is not easy to remove the iron with large adsorption.
Vibration during transportation and installation can easily cause changes in the magnetic structure, resulting in magnetic attenuation.
For areas with large temperature changes, temperature differences have an effect on magnetic induction. Since the self-unloading type permanent magnetic iron remover is equipped with a self-dumping belt, the alternating magnetic field generated by the alternating current motor has influence on the magnetic force of the body.
High cost and short history of use.