The material vertically falls into the high-speed rotating impeller from the upper part of the machine, and under the action of high-speed centrifugal force, it collides with another part of the material that is divided in an umbrella shape around the impeller at high speed and breaks down. After the materials collide with each other, they will form vortices between the impeller and the casing and collide and rub against each other multiple times, crushing the material. It is discharged vertically from the lower part and screened by the screening equipment to obtain the required particle size of the finished product.