Model particle velocity on a vibrating surface
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Łódź Technical University
Publication date: 2002-01-01
Physicochem. Probl. Miner. Process. 2002;36(1):147-157
In mechanical processing of granular materials the basic process is screening, hence it is extremely important to have a well designed screen. A correctly determined real velocity at which material moves along the screen surface is a prerequisite of designing a screen. The authors made an attempt to develop a new method for determination of the velocity of a granular layer moving on the vibrating surfaces of sieves or oscillating conveyors. The method is based on an analytical description of phases of the model particle movement, and next on an empirical correction made for the layer. The particle velocity is determined on the edges of subsequent phases of the movement, hence the name “a phase method”. The authors present preliminary results of investigations whose aim was to verify the existing models and to determine an empirical correction with respect to the impact of process variables.
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