Patent ID: 8814071

Claim:
An agitator ball mill comprising: a milling chamber which is bounded by a side wall, a front wall on an inlet side and a front wall on an outlet side, wherein in the front wall on the outlet side a deflection channel arranged which annularly surrounds a sieve, an agitator arranged in the milling chamber having a rotatably mounted and driven agitator shaft and a plurality of accelerators arranged thereon from the inlet side to the outlet side, an inlet for milling material and milling media arranged close to the front wall on the inlet side, an outlet for milling material arranged in the front wall on the outlet side, wherein the outlet is separated from the milling chamber by the sieve located between the chamber and the outlet, wherein the accelerator arranged closest to the outlet comprises blades which are axially lengthened and extend along the axial length of the sieve, and wherein the deflection channel is arranged in proximity to the accelerator closest to the outlet and the sieve in a configuration to in use allow milling material and media to flow between the sieve and the blades and along a surface of the sieve thereby preventing material accumulation on the sieve.