The main motor drives the grinding disc to rotate via a reducer. Simultaneously, air enters the mill through the air inlet. Material falls onto the center of the grinding disc through the screw feeder. Under centrifugal force, the material moves evenly from the center to the edge of the grinding disc. When passing through the grinding roller track area on the grinding disc, it is crushed by the grinding rollers. Large pieces are directly crushed, while fine particles are compressed to form a material bed for intergranular crushing. The crushed material continues to move towards the edge of the grinding disc until it is carried away by the strong airflow at the air ring. Larger particles fall back onto the grinding disc for further crushing. When the material in the airflow passes through the upper separator, the coarse particles return to the grinding disc for further grinding under the action of the separator blades. Qualified fine powder exits the mill with the airflow and is collected by the system's powder collector. The collected powder is the product of the vertical mill. When iron blocks and other debris mixed in with the material move to the edge of the grinding disc, they are too heavy to be blown away by the wind and fall into the lower chamber of the mill. They are then scraped into the slag discharge port and discharged from the machine by the scraper plate installed at the bottom of the grinding disc.