Patent ID: 8876028

Claim:
A method for operating an agitator ball mill comprising: providing the agitator ball mill with a cylindrical grinding container which comprises at least one grinding stock inlet and at least one grinding stock outlet, wherein an agitator shaft connected to a drive is disposed in the grinding container, said agitator shaft transmitting a part of a drive energy to auxiliary grinding bodies, wherein the auxiliary grinding bodies are distributed loosely in the grinding container, and a separation device assigned to the grinding stock outlet of the agitator ball mill, wherein the separation device is disposed around a rotational axis, characterized in that the separation device comprises at least two components, wherein the separation element is combined with at least one dynamic element to generate a material flow, and that a material circulation takes place inside the grinding container between an outlet and an inlet of the separation device, wherein penetration of auxiliary grinding bodies into a gap formed by a distance between the dynamic element and an end part of the grinding container is prevented by the material circulation; rotating the drive; and feeding the grinding stock into the grinding stock inlet.