REC «Mekhanobr-Tekhnika» (St. Petersburg, Russia):

Korovnikov A. N., Sales Director, Candidate of Engineering Sciences, korovnikov_an@mtspb.com

Trofimov V. A., Chief Designer, trofimov_va@mtspb.com

Skolkovo Institute of Science and Technology (Moscow, Russia):
Mikhailova N. V., Expert, Candidate of Engineering Sciences

Russian Presidential Academy of National Economy and Public Administration (RANEPA; St. Petersburg, Russia):
Paikov A. A., Postgraduate Student

The article considers various approaches aimed to increase versatility and ensure improvement of the existing vibrational classification equipment and technology in order to achieve higher capacity, equipment utilization, and process indicators. It is shown that one of the main methods to ensure higher reliability of classification equipment (such as vibrating screens) is to improve the vibration drives. This allows obtaining a higher equipment utilization factor by increasing the net operating time under process load over long operation periods from the existing value of 0.92–0.93 up to 0.97. Capacity improvements for vibrating screens used in the processing of minerals and metal powders may be ensured through the use of screening surfaces of complex shapes, including by applying both the traditional coarse-to-fine screening sequence and the reverse fineto-coarse sequence with the use of vertical or inclined sieves. A complex screening surface arrangement was successfully implemented in the design of a vibrating screening separator for the primary sorting of municipal solid waste (MSW). With equal performance in terms of initial MSW capacity and power consumption, the proposed separator weighs 4 to 7 times less, while its sorting efficiency for the target fractions is 2–2.5 times greater than that of traditional trommels. It also eliminates film material clogging of screening surfaces, which is a typical operational disadvantage of all trommel screens.
This study was carried out with the financial support of the Russian Science Foundation (project No. 20-79-10125).

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