Magnetic separation is the most widely used and most effective method for removing iron from non-metallic minerals such as kaolin, bentonite and quartz. The widely used magnetic separation equipment mainly includes dry magnetic separator, permanent magnetic cylinder magnetic separator and high gradient magnetic separation machine and so on.



1. Dry magnetic separator

The dry magnetic separator has the advantages of simple structure, low operating cost, low investment, and energy saving and environmental protection. The dry magnetic separation process is especially suitable for cold regions with abundant resources but severe water shortage in the west and north of China.
According to the difference of magnetic induction, dry magnetic separator can be divided into: dry weak magnetic field separator, dry medium magnetic field separator, dry strong magnetic field separator, dry high gradient magnetic separator.

2. Permanent magnet cartridge magnetic separator

The permanent magnetic cylinder magnetic separator has been widely used in black and non-ferrous metal concentrators and is one of the important equipments of modern magnetic separation plants. The device uses a relatively high magnetic rare earth ferrotitanium boron magnetic block and a ferrite magnetic block to form a composite magnetic system, which has the characteristics of high magnetic field strength, large depth of magnetic field action, and low demagnetization. Therefore, the equipment has large processing capacity and adapts to production fluctuations. Strong, good selection. According to different types of tank structure, it can be divided into three types: forward flow type, counter flow type and semi-reverse flow type. The commonly used tank body is the most semi-reverse flow type.

3. High gradient magnetic separator

High-gradient magnetic separation equipment has been invented since the 1960s. The high magnetic field gradient generated by the magnetically permeable medium obtains a large magnetic force to achieve the purpose of sorting and recovering weak magnetic and fine-grained paramagnetic minerals. The main equipment for fine-grained magnetic materials.

The vertical ring pulsation high gradient magnetic separator has the advantages of high equipment reliability, large processing capacity, high beneficiation efficiency, low power consumption and low production cost. It has been successfully applied in industries such as iron oxide ore, manganese ore, ilmenite and so on. The selection of magnetic minerals and the purification of non-metallic minerals such as quartz and kaolin.

At present, high gradient magnetic separator still has the disadvantages of high energy consumption, complicated structure and high equipment price, but its processing capacity, sorting efficiency and high index are high, and its role in the processing of fine-grained weak magnetic minerals will become more and more important. The larger the application, the more widely the application field will be.