CENTRIFUGAL MILL Russian patent published in 1995 - IPC

FIELD: grinding of materials. SUBSTANCE: mill has stationary housing 1 and rotor 2, both made in form of truncated cones. Found on side surface of rotor are longitudinal slots 6 with balls 7. Tapers of housing and rotor are pointed in opposite directions. Rotor has space 3 with bottom 4. Side surface of slots 6 have cross ribs 8. Holes 9 and 10 in rotor serve to communicate rotor space with slots 6, that is why balls 7 circulate through working space and rotor space. Slots 6 of rotor 2 are widened in direction of movement of balls 7 which contributes to cleaning of balls from material under grinding when balls come out of working space, thus preventing wedging of balls. EFFECT: enlarged operating capabilities. 5 cl, 2 dwg