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New vibroscreen with additional feed elements

Kim A., Doudkin M., Vavilov A., Guryanov G.

Archives of Civil and Mechanical Engineering

2017

Vol. 17, no. 4

786--794

The article presents research results of the screening process of bulk materials with a new vibroscreen design with additional feed elements. Changes of the traditional screen structure is shown, the use of them increases the screening process efficiency and passage intensity of lower grade of bulk material to the sieve. It is established that the most simple, accessible, effective and efficient way to increase the effectiveness of the screening is the use of additional feed elements. According to the developed mathematical model of cell screening process, numerical studies to identify the effect of process parameters on the screening kinetics carried out. It is proved that the use of additional feed elements has a significant effect on the screening process kinetics and the state evolution of fine particle concentration in the bulk layer. It increases the screening effectiveness by improving the sieve filling and reduces the screening time. It is proved the performance, possibility to use, benefits, efficiency, and prospects for further research of the new vibroscreen scheme with feed elements. Description and results of comparative experimental studies of vibroscreens with different variants of additional bulk material excitation are presented.