water cooling electromagnetic separator for Kaolin

PTMS MAGNETIC SEPARATOR

what is magnetic separation used for？

Magnetic separation is an indispensable process in the production process of quartz sand. Its advantage is strong selectivity. The impurities removed mainly include magnetite-based ferromagnetic minerals and hematite, limonite and biotite. The main weak magnetic impurity minerals, while maintaining effective removal of impurities, also achieve high quartz sand production. The magnetic separation process can minimize the weak magnetic impurity minerals such as hematite, limonite and biotite including continuum particles. Strong magnetic separation usually uses a wet magnetic separator or a high gradient magnetic separator. In general, quartz, which is mainly composed of weak magnetic impurities such as limonite, hematite, and biotite, can be selected by using a wet magnetic machine at 10,000 Oersted or higher; The main ferromagnetic minerals are better selected by weak magnetic or medium magnetic machines.

Several principles of quartz sand magnetic separation technology

First, first weak magnetic and strong magnetic

The mechanical iron ferromagnetic mixed in the crushing process of quartz sand is strong. It should be removed by weak magnetic separation equipment first, and then the weak magnetic impurities are removed by strong magnetic separation equipment: if the content of strong magnetic material is large, strong magnetic separation is adopted directly. In addition to iron, the strong magnetic material is easy to block the strong sorting channel and affect the sorting index.

Second, wet sorting

For fine-grained or fine-grained minerals, the mutual adsorption between the particles is enhanced, and the inclusion between the magnetic and non-magnetic materials is severe. If dry sorting is used, it is difficult to remove the magnetic material, and the wet method is generally required. In the case of wet sorting, an auxiliary manner such as rinsing and pulsation can be generally added to break the inclusion between the magnetic substance and the non-magnetic substance, and the probability that the magnetic substance is captured by the magnetic field is effectively improved.

Third, high-precision sorting can be used for dry sorting

In the process of removing iron and purifying high-purity non-metallic ore with relatively coarse particle size, a dry strong magnetic separation method can be used. In the sorting process, the material is managed to pass the single layered loose state through the strong magnetic field region, and the non-magnetic material There is almost no inclusion between the weak magnetic material and the magnetic material is easily captured when it passes through a strong magnetic field. The precision of iron removal is high, but the processing capacity of this method is generally small.

Fourth, choose the appropriate sorting granularity

The particle size of the material is very important for the sorting effect. In the case of meeting the product particle size requirements, the iron removal operation should be carried out at a coarser particle size. Because the finer the particle size, the more the number of breaks, the more mechanical iron is mixed in, the processing capacity of the equipment is also reduced, and the production cost is increased.

5. Avoid secondary mixing of iron impurities

The processing process of non-metallic ore is relatively simple. After the iron removal operation, try not to crush or sift again. In the process design, the magnetic separation and iron removal should be placed as far as possible to avoid the iron impurities. Mixed in.