MODIFIED CRITERION EQUATION OF HYDRO VORTEX DUST SUPPRESSION IN COAL MINES

The article describes modification of mathematical model and building of criterion equation for hydro vortex inertia orthokinetic dust suppression in coal mines as the currently available technology and equipment of dust control are insufficiently effective. Based on the similarity theory and using the Fourier transform, Pi theorem and Venikov’s statements on similarity of complex systems, the problem on building of an equation for hydro vortex inertia orthokinetic coagulation in the criterion form has been formulated and solved. The obtained criterion equation is used to determine basic indicators an similarity criteria which define identity between experimental research and actual dust suppression processes at sufficient accuracy. The threshold values of the Stokes criterion for total absorption of dust particles by rotating fluid drops at the expense of the increase in the angle of contact are proved to be much lower. The experimental research confirms fidelity of the criterion equation of hydro vortex inertia orthokinetic coagulation in providing identity between model testing and actual physical processes of dust suppression. The theoretical studies and experimental tests prove high efficiency of hydro vortex dust suppression enabling decrease in water consumption by 25%, reduction in minimum size of absorbed dust particle to 5 ∙ 10–7 and improvement of dust control efficiency to 99%.


For citation: Makarov V. N., Ugolnikov A. V., Materov A. Yu., Makarov N. V., Tauger V. M. Modified criterion equation of hydro vortex dust suppression in coal mines. MIAB. Mining Inf. Anal. Bull. 2019;(7):53-61. [In Russ]. DOI: 10.25018/0236-1493-2019-07-0-53-61.

Keywords

Сriterion equation, coal mine, wetting angle, of criterion equation, hydrovortex nozzle.

Issue number: 7
Year: 2019
ISBN: 0236-1493
UDK: 622.02: 624.1
DOI: 10.25018/0236-1493-2019-07-0-53-61
Authors: Makarov V. N., Ugolnikov A. V., Materov A. Yu., etc.

About authors: V. N. Makarov (1), Dr. Sci. (Eng.), Professor, A. V. Ugol'nikov (1), Cand. Sci. (Eng.), Head of Chair, A. Yu. Materov, Head of Department, e-mail: a.materov@oilgazmash.ru, Scientific-production complex «OylGazMash», 142103, Podolsk, Russia, 1. Makarov (1), Cand. Sci. (Eng.), Head of Chair, e-mail: mnikolay84@mail.ru, V. M. Tauger (1), Cand. Sci. (Eng.), Head of Chair, 1) Ural State Mining University, 620144, Ekaterinburg, Russia. Corresponding author: N.V. Makarov, e-mail: mnikolay84@mail.ru.

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