This machine is an impact-type crusher developed specifically for materials that are prone to over-grinding. It consists of a stationary disc and a rotating disc inside. Under the high-speed rotation of the rotating disc, the material is crushed through continuous impact, friction, and shearing forces on the stationary disc. Under negative pressure, particles that meet the required size escape the crushing zone, enter the classification zone, and are then collected in a collector, while coarse materials are returned to the crushing zone for further grinding.