What are the characteristics of jet mill used for silica matting powder
Silica can be used in all coatings. In the processing of silica matting powder, pulverization and classification are indispensable. At this time, a fluidized bed jet mill is needed. The equipment uses high-speed airflow to carry the animal material, so that the particles of the raw material are friction and shear between the particles, and the particles and the inner wall of the equipment collide with each other, so that the raw materials are subjected to double pulverization, and the pulverization efficiency is improved. Therefore, the fluidized bed jet mill is almost instantaneous. The raw materials can be crushed to ultrafine powder state.
The fluidized bed jet mill for silica matting powder has the following characteristics:
The principle and characteristics of the lower crushing area are the same as those of the disc-type supersonic jet mill, so that the powder added to the mill is easily hit by the air flow, and has a higher crushing probability than the fluidized bed collision type model.
The upper classification principle adopts fluidized bed type horizontal turbine forced classification, the cutting point is accurate, the efficiency is high, and any raw material of different hardness can be controlled.
In the crushing process, due to the forced classification of the upper turbine, the coarse material settles on the bottom of the crusher. The powder concentration in the crushing area is much higher than that of the disc jet mill, so this model is more pulverized than the disc jet mill higher efficiency.
The materials of the crushing parts are all made of corundum ceramic materials, including the high-speed classifying impellers are all made of corundum ceramic materials. Ensure that the pulverized material maintains high purity, no contamination by impurities, and the whiteness of the finished product is not affected.
The raw materials can be selected according to the customer’s process requirements and performance requirements such as raw material whiteness, transparency, particle hardness, pore volume oil absorption value, etc. The crushing model can process powder products that meet the required particle size.
When processing silica matting powder, its product fineness can be d100<18μm. When it smashes the crushed object, it can adjust the median diameter of the finished product while ensuring the upper limit of the control particle size. The particle size distribution (median diameter) of the required powder product can be controlled manually.