When the HGM grinding mill is working, the main motor drives the main shaft and the turntable to rotate through the reducer, and the roller pins on the edge of the turntable drive dozens of grinding rollers to roll in the grinding ring raceway. Large materials are scattered to the periphery under the action of centrifugal force and fall into the grinding ring raceway to be impacted, rolled, and ground by the ring rollers. After being processed by the three-layer ring raceway, they become powder.

The high-pressure fan sucks the external air into the machine through suction and brings the crushed materials into the powder selector. The rotating impeller in the powder selector makes the coarse materials fall back to be re-grinded, and the fine powder that meets the requirements enters the cyclone powder collector with the airflow and is discharged from the discharge valve at the bottom as the finished product, while the airflow with a small amount of fine dust is purified by the pulse dust collector and discharged through the fan and muffler.