Separator for separating processed material from grinding medium.

摘要

A dispersing and grinding apparatus disperses and grinds material by the use of a particulate grinding medium. A separator installed at the discharge end of the apparatus separates the processed material from the grinding medium. The separator comprises a stationary stator (4), and a rotatable rotor (11) mounted so that the rim area of the rotor is spaced from and faces the stator to define therebetween a small gap which is large enough to permit the processed material to pass therethrough though small enough to prevent the grinding medium from passing therethrough. The rotor (11) has on its underside a plurality of protruding guide portions (15) configured as arc-shaped protrusions which forcibly guide and disperse the grinding medium tending to collect and concentrate at the rim area of the rotor. By such a construction, the useful life of the rotor is significantly prolonged because the grinding medium is positively and forcibly guided radially outwardly away from the confronting surfaces of the rotor and stator thereby minimizing wear of the rotor and stator surfaces.