ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

Makarov V. N., Potapov V. Ia., Makarov N. V., Patrakeeva I. Iu. – The Ural State Mining University, Ekaterinburg,
the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
In order to improve the quality of the stratification of ore and non-metallic materials components in shelf separators some
peculiarities of components particles interaction with directed air flow are investigated, analysis is fulfilled and the reasons
for poor operational efficiency of separators are detected. The criteria of aeration similarity – aeration gravity and aeration
64 «Известия вузов. Горный журнал», № 5, 2017 ISSN 0536-1028
inertia are defined, characterizing vertical and horizontal overloads of components particles of materials under the action
of aerodynamic forces for integral evaluation of the influence of "windage" on their motion trajectory, and as a result, on
the efficiency of their stratification. The dependence of aeration gravity criteria and aeration inertia is determined from the
shape, size, density of the enriched material, and energy of the directed air flow. Using the two-phase medium motion
dynamics theory, criteria equations of materials component particles aeration stratification are obtained depending on
their physical properties determined by particles shape, size, density, and combined by integral criterion of "windage", as
well as the parameters of the controlled air flow. On the basis of the criteria equation, formulae are obtained to calculate
the position of receiving bunker of friction drum-shelf separator aeration stratification nod, which provides maximum
quality of stratification of initial raw material of the separated material. Separate accounting of materials components
particles velocity effects and the controlled air flow velocity makes it possible to determine the optimal ranges of air flow
velocity depending on the range of enriched material aeration similarity criteria variation. The article proves the efficiency
of aeration stratification with the use of controlled air flow.
Key words: friction separator; aeration stratification; aeration similarity criterion; physical characteristics; "windage" integral
1. Kravets B. N. Spetsial'nye i kombinirovannye metody obogashcheniia [Special and combined methods of
concentration]. Moscow, Nedra Publ., 1986. 340 p.
2. Liaptsev S. A., Potapov V. Ia., Davydov S. Ia., Potapov V. V., Semerikov L. A., Vasil'ev E. A. [Classification of
materials on impact with particulate surface]. Novye ogneupory – New Refractories, 2014, no. 12, pp. 10–13. (In Russ.)
3. Makarov V. N., Davydov S. Ia. [Theoretical foundations of ventilation efficiency in the engineering processes of
construction industry]. Novye ogneupory – New Refractories, 2015, no. 2, pp. 59–63. (In Russ.)
4. Potapov V. Ia., Timukhin S. A., Potapov V. V., Konev Ia. V. [The use of aerodynamic effect in friction separators under
the separation of mineral complexes with “windage”]. Izvestiya Ural'skogo gosudarstvennogo gornogo universiteta –
News of the Ural State Mining University, 2011, no. 25–26, pp. 84–89. (In Russ.)
5. Makarov V. N., Davydov S. Ya. Theoretical basis for increasing ventilation efficiency in technological processes at
industrial enterprises. Refractories and Industrial Ceramics, 2015, vol. 56, issue 1, pp. 103–106.
6. Kelina I. M., Tsypin E. F., Aleksandrova E. P. [Regarding the coefficients of mineral friction under the concentration
of micaceous shales at shelf air separator]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher
Institutions. Mining Journal, 1983, no. 4, pp. 126–129. (In Russ.)
7. Lyaptsev S. A., Potapov V. Ya., Davydov S. Ya., Potapov V. V., Semerikov L. A., Vasil’ev E. A. Classification of
granular material in an impact with a separation surface. Refractories and Industrial Ceramics, 2015, vol. 55, no. 6,
pp. 570–572. (In Russ.)
8. Loitsianskii L. G. Mekhanika zhidkosti i gaza [Fluid mechanics]. Moscow, Drofa Publ., 2003. 840 p.
9. Makarov N. V., Belov S. V., Fomin V. I., Volkov S. A. [Calculation of “ventilators – electric-power distributor” system
aerodynamic similarity criteria]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher
Institutions. Mining Journal, 2008, no. 5, pp. 66–69. (In Russ.)



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