The disc of vertical mill rotated by the main motor driving gear, while hot air from the air inlet into the vertical mill body, the central disc material falls from the discharge port, under the action of centrifugal force, the material from the central disc even move to the edge, through powder on disc when the roller track area by rolling mill rolls, bulk material directly crushed fine material is formed after the extruded material bed intergranular pulverization. Crushed material to the disc edge continues to move until it is taken away by the strong airflow at the air ring, while the larger particulate material again fall on the disc continues to crush, airflow through the upper portion of the material in the separator, the rotor the role of the blade, coarse grinding disc back on qualified powder together with the air out of the grinding, is collected powder collector system, are collected powder is vertical mill grind product.

When mixed into the mass of iron and other debris along with material moved to the edge of the disc, which can not be due to the large wind from its own weight, fall to the mill to be installed at the bottom of the lower chamber disc scraper plate scraped into slag discharge port outside the machine.