CENTRIFUGAL MILL Russian patent published in 2015 - IPC B02C13/26 

FIELD: process engineering.

SUBSTANCE: invention is used for grinding of abrasive materials in production of construction materials, etc. Claimed mill comprises two bodies (1) with rotors (3) located in one plane. Said bodies are connected via common tangential channel (2). Side walls converge in the mill mirror plate at 120-150 degrees. Said rotors can run towards the channel outlet. Loading pipes (6) in every body are located at circle arc of 50-280 degrees from straight line through the centres of rotors rotation. Arc radius makes 1/4-3/4 of rotor radius with the centre at the rotor vertical axis. Edge inclined at 45 degrees is made at loading pipe lower end, from the rotor side opposite the direction of rotation. Unloading pipe (5) is located in the channel and equidistant from the rotor rotational axis. Accelerating blades (4) in height over 2d_max and vertical rectangular ribs (7) in height of (0.1-0.2)d_max, where d_max is the material particle maximum size are secured at said rotors. Cutouts in blades and rib comply with the loading pipe profile with technological clearance.

EFFECT: higher efficiency of grinding.

4 dwg