Abstract: A beater mill has at least one vertically or obliquely extending cylindrical milling chamber and a rotor rotatably supported in the chamber. The axis of the rotor extends parallel to the axis of the chamber. A number of protruding beaters are supported pivotably on the rotor and an inlet opening is arranged above the rotor for the supply of goods to be milled. An outlet opening is arranged below the rotor for discharge of milled goods. The cylindrical chamber wall is impermeable, optionally air-impermeable, to goods to be milled and having been milled.