CENTRIFUGAL MILL OF ONCOMING GRINDING Russian patent published in 2006 - IPC B02C13/20 

FIELD: the invention refers for processing mineral raw materials for making micropowders.

SUBSTANCE: the centrifugal mill of oncoming grinding has a bunker, a body, an upper and lower rotors, a drive of the lower rotor and channels for bringing out a ready product; the upper rotor has an upper, a middle and a lower discs forming between themselves two working chambers and the lower rotor -out of an upper and a lower discs in the form of a cup of discs between which a working chamber is formed. At that on the inner and the exterior side surfaces of the cup there are accelerating ribs with an angle of inclination to the side opposite to the direction of the rotor's rotation. At that the rotors have accelerating bow-shaped ribs and in the upper body of the mill there are a cone and a skirt for returning of the crushed material into the upper rotor for additional grinding and separation of the ready product into discharging channels. The disc of the upper rotor may have a rim overlapping half of the upper chamber. The cone can be installed with possibility of lifting or descending.

EFFECT: allows to regulate fineness of grinding.

2 cl, 3 dwg