The permanent magnetic drum magnetic separator is widely used in magnetite separation, coarse particle pre-selection tailing, concentration before filtration, magnetic aggravating dose recovery, wet strong magnetic separation Pre-selection of ore and iron removal and purification of non-metallic minerals such as quartz sand. The permanent magnet drum magnetic separator is composed of a magnetic system, a drum, a sorting tank, a transmission device, and overflow devices for feeding and discharging. The arrangement of the magnetic system and the number of magnetic poles have a decisive influence on the sorting results. According to the diameter of the cylinder, the magnetic poles are generally 4-7 poles, and the polarities alternate along the peripheral direction. The cylinder is used to adsorb and transport the magnetic particles and prevent the slurry from immersing in the magnetic system. The cylinder and its end caps are made of non-magnetic, high resistivity and corrosion resistant materials. The sorting tank is generally made of austenitic stainless steel and lined with rubber or synthetic material to prevent wear. Generally, a gear motor or a Y series motor is used to drive the cylinder to rotate through a reducer.
Strontium ferrite and barium ferrite permanent magnet materials are usually used to make magnet blocks. In recent years, rare earth permanent magnet materials such as NdFeB magnets have been used to make magnet blocks. Although the latter is more expensive, its magnetic properties Good, the dosage can be reduced. At present, ferrite permanent magnet blocks and rare earth permanent magnet blocks are commonly used to form a composite magnetic system, which significantly improves the performance of the magnetic separator (for example, the magnetic field strength is more than doubled) and expands the application range of the magnetic separator. In recent years, rare earth permanent magnet blocks are used to form the magnetic system to achieve higher magnetic strength and performance, such as NCT series all rare earth permanent magnet drum magnetic separators.
