DEVICE FOR SEPARATION OF MICROPARTICLES MIXTURE OF MATERIALS WITH DIFFERENT DENSITIES Russian patent published in 1998 - IPC

FIELD: devices of centrifugal separator class; may be used in withdrawal of heavier materials from suspension mixed with materials of the other density. SUBSTANCE: device contains bowl-shaped rotor with vertical axis of rotation having base and side wall; means for rotor rotation; means for supply of initial mixture to rotor to ensure in the course of rotation, movement from base upward over the side wall and overflow mixture of light fraction through its throat; means for collection of this fraction and at least one annular projection on rotor internal surface axially located round rotation axis and forming at least one circular hollow for collection of heavy fraction of mixture and light fraction moving over heavy fraction; and a number of jet nozzles for injection of fluidizing liquid into layer of material. Annular hollow has a number of discharging means located with some inclination for discharge of heavy fraction occupying a small part of corner space of annular hollow and means for collection of heavy fraction unloaded from rotor. EFFECT: provision, due to design of separator, for unloading of heavy fraction continuously and increased efficiency of device. 7 cl, 5 dwg