MQP30 raw material crusher and cyclone separator, dust collector, induced draft fan to form a complete set of crushing system. After the compressed air is filtered and dried, it is sprayed into the grinding chamber at a high speed through the Laval nozzle. The materials are crushed by repeated collision, friction and shear at the intersection of multiple high-pressure air streams. The crushed materials move to the classification area with the updraft under the action of the fan, and the coarse and fine materials are separated under the strong centrifugal force generated by the high-speed rotating classification turbine. The fine particles that meet the particle size requirements enter the cyclone separator and dust collector through the grading wheel, and the coarse particles fall to the grinding zone and continue to be crushed.