Abstract: The screening performance indexes and screen surface configuration of new type discrete vibrating screen are studied based on screening theory. The throwing coefficient, jump exponent and theoretical expression of their correlation are found and the screen mesh configuration structure of this device when used for asphalt mixture agitator is analyzed, providing a theoretical basis for the structure design and application of this kind of device.

Key words: Discrete type vibrating screen, Throwing coefficient, Jump exponent, Screen surface configuration