VSI mill

After leaving channels of the accelerator particles impact with a wear plate (3) in the grinding chamber.

Big particles (greater than 1 mm) fall down to outlet (5) and later they transport to hopper by an elevator.

Other particles (less than 1 mm) lift by air stream into a classifier where blades (4) make rotating dust flow.

Middle size particles shift to wall by centrifugal force in a big chamber of a classifier and fall down to cone (6) and later they move into an accelerator (2).

Therefore, a full complete grinding line consists of a feeder, an elevator, a VSI mill with an air classifier, a cyclone, a fan and a bag filter.

Fig. 1. A schematic drawing of a VSI mill
Fig. 2. A schematic drawing of the accelerator in a VSI mill