Agitator ball mill

Agitator ball mill

• having a horizontally arranged grinding vessel
• which encloses a cylindrical grinding chamber bounded by a wall of the grinding vessel and by a grinding chamber inner boundary,
• with a grinding material feed leading into the cylindrical grinding chamber at one end, and
• with a grinding material outlet leading out of the cylindrical grinding chamber at the other end, having a grinding material/grinding bodies separating device arranged upstream thereof,
• having an agitator arranged in the cylindrical grinding chamber, that has
• an agitating shaft having a central longitudinal axis and
• agitating discs mounted to the agitating shaft in a torque-proof manner and spaced from one another by a distance,
• wherein two adjacently arranged agitating discs of the agitating discs mounted to the agitating shaft are bounding a grinding cell, respectively,
• wherein each of the agitating discs mounted to the agitating shaft comprises openings connecting the adjacent grinding cells, and
• wherein—with respect to the central longitudinal axis—the agitating discs have a radial extension R18 from the grinding chamber inner boundary to a radially outer edge of the agitating discs,
• wherein the openings are embodied as grinding material passage openings and are arranged only in the immediate proximity of the grinding chamber inner boundary, wherein the grinding material passage openings have a radially outer boundary, respectively, that has a distance R28 from the grinding chamber inner boundary in a radial direction of the agitating disc,
• wherein for a ratio of the distance R28 of the radially outer boundary of the grinding material passage openings to the radial extension R18 of the agitating discs the following condition applies:
• 0.05·R18≤R28≤0.25·R18,
• and wherein the agitating discs are otherwise closed.