APPARATUS FOR SIEVING A PARTICULATE MATERIAL

摘要

An apparatus for sieving a particulate material into selected size fractions. The apparatus comprises a screen (3) for separating the particulate material into an undersize fraction and an oversize fraction. The screen (3) has an inlet end (5) for introducing particulate material to the screen and an outlet end (7) for discharging the oversize fraction; a means (13) for receiving the undersize from the screen; a rotating/oscillating drive (26) means for rotating or oscillating the screen about an axis of the screen; and a twin phase drive means (15; 27, 28) coupled to the screen for driving the screen in two directions.