Equipment principle
The airflow classifier is a type of airflow classification equipment, which is combined with a cyclone separator, dust collector, and induced draft fan to form a classification system. Under the suction force of the fan, the material moves at high speed from the inlet of the classifier to the classification zone along with the rising airflow. Under the strong centrifugal force generated by the high-speed rotating classification turbine, the coarse and fine materials are separated. The fine particles that meet the particle size requirements enter the cyclone separator or dust collector through the gap between the classification wheel blades. The coarse particles carry some of the fine particles and their velocity disappears after hitting the wall. They descend along the cylinder wall to the secondary air outlet, where they are separated by the strong washing effect of the secondary air. The fine particles rise to the secondary classification of the classification zone, and the coarse particles descend to the discharge port and are discharged.

Features of the equipment
Suitable for fine grading of dry micro scale products, it can grade spherical, flake, and irregularly shaped particles, as well as classify particles of different densities.
The particle size of graded products can reach D97:3~150 microns, with infinitely adjustable particle size and extremely convenient variety replacement.
Grading efficiency (extraction rate) ranges from 60% to 90%. Grading efficiency is related to the properties of the material and the content of particles that meet the particle size requirements. If the material has good fluidity and the content of particles that meet the particle size requirements is high, the efficiency will be high; otherwise, it will be low.
The grading wheel has high speed and accurate vertex cutting.
It can be used in series with grinding equipment such as ball mills, vibration mills, and Raymond mills to form a closed-loop system.
The control system adopts program control, with real-time display of operating status and easy operation.


Applicable fields
Mineral additives; Resin, chemicals; Ink powder; Ceramic raw materials; Food, pesticides, pharmaceuticals; Other high-performance powders.
