The material is vertically dropped into the high-speed rotating impeller from the upper part of the composite crusher (composite crusher), and under the action of high-speed centrifugal force, it collides and crushes at high speed with another part of the material that is divided in an umbrella shape around the impeller. After colliding with each other, the material will form vortices between the impeller and the casing and collide and rub against each other multiple times, resulting in crushing. It is discharged directly from the lower part, forming a closed loop for multiple cycles, and controlled by screening equipment to achieve the required particle size of the finished product.