Set the mechanical impact ultrafine mill and turbine ultrafine classifier in one, the pulverized material is subjected to the action of air flow, and the turbine classifier forces the grading in the machine. The grading device replaces the screen of the usual grinder, and can simultaneously complete the two steps of micro-crushing and micro-powder separation. The crushing efficiency of Rotational speed is high. Adjust product granularity without downtime. When the system is pulverized, the powerful crushing airflow produces strong cooling function, and the temperature rise is low during pulverization. It is especially suitable for processing heat sensitive and fibrous materials, and the product particle size is uniform.