Several auxiliary nozzles are arranged around the main nozzle to accelerate the particles around the main nozzle (in the fluidized bed) into the center of the main beam, so as to obtain a large collision velocity;

A feeding nozzle is arranged in the center of the ultrafine vertical mill, through which the fluidized particles in the fluidized bed are directly sucked into the center of the main nozzle to obtain a very high collision velocity;

Multiple nozzles are arranged closely, and each nozzle intrudes into each other on the path of accelerating particles, eliminating the low velocity distribution area at the edge of the airflow beam and forming a new common velocity distribution curve point by point. In this way, the low speed zone of many nozzles can be reduced, the collision speed of particles can be increased, and the crushing efficiency can be improved.