Operating Method for a Grinding Body Mill and Grinding Body Mill for the Same

Grinding body mill having a housing which surrounds a grinding chamber in which grinding bodies are arranged and, during normal operation, are set in motion for the purpose of grinding a grinding stock to be ground, which housing comprises a product inlet and a product outlet, between which the grinding stock to be ground flows through the moving grinding bodies, wherein a separating device is positioned upstream of the product outlet, which separating device is designed to prevent grinding bodies from exiting the grinding chamber into the product outlet during normal operation of the grinding body mill, wherein

• downstream of the product outlet, there is positioned a discharge pipe which is inclined upward with respect to the horizontal, and
• the separating device comprises a rotor body which is positioned upstream of the product outlet and which, during operation, rotates and thus forces grinding bodies radially outwards,
• such that grinding bodies that have passed into the discharge pipe are, owing to the upward inclination of the discharge pipe with respect to the horizontal, directed out of the discharge pipe through the product outlet into the rotor body when the grinding body mill is at a standstill, and when operation of the grinding body mill is resumed, said grinding bodies are conveyed back into the grinding chamber owing to the rotation of the rotor body.

Grinding body mill according to claim 6, wherein the grinding body mill is a stirred ball mill.