Optimization of geometrical parameters of the hydro-cyclone inertial Venturi separator
- 1 — Ural State Mining University
- 2 — Ural State Mining University
- 3 — Ural State Mining University
Abstract
The usage of nanosized particles as modifying agents opens new possibilities in the creation of materials with unique properties. The effective qualitative improvement of Russia's GDP structure is based on the recycling of technogenic mineral formations (TMF) and the production of high-tech products. Numerous studies have shown that the efficiency of this process is limited by high requirements to the fractional composition, median size, and dispersion of TMF particles, as well as imperfection of equipment and technology and their classification. The strict classification requirements must be taken into account, when developing separation methods for the dispersion of the median sizes of TMF microparticles under the conditions of the probabilistic distribution of the physical and mechanical parameters of the feed. The studies covered in the article are based on the provision on a significantly greater influence of inertial forces on the trajectory of a hydrodynamically unsteady motion of the dispersed «a microparticle – a drop of liquid» system during the hydro-cyclone separation with respect to the aerodynamic forces of their movement in a fluidized bed. The paper shows that within the range of kinetic energy of the translational motion of liquid droplets, which overcomes the aerodynamic barrier of coagulation of hydrophobic TMF particles, the minimum diameter of absorbed microparticles during hydro-cyclone coagulation depends only on the magnitude of the angular velocity of rotation of the liquid droplets. We obtained the equations for the Euler and Reynolds criteria, their average values, and the relaxation time of liquid droplets with integrated micro and nanoparticles of TMF, depending on their median size during hydro-cyclone separation. The developed mathematical model of inertial hydro-cyclone separation of finely dispersed TMF allows determining the optimal geometric parameters and energy characteristics of the Venturi separator, its aerator, and the position of the receiving tanks. The experimental results confirmed the possibility of classifying finely dispersed wastes of mining and metallurgical production in the range of median sizes (0.5-5)∙10 –6 m by fractions with a dispersion of not more than 20 %.
References
- Venikov V.А. Theory of similarity and modeling. In relation to the tasks of the electric power industry. Мoscow: Librokom, 2014, p. 439 (in Russian).
- Gordeev Yu.I., Abkaryan A.K., Zeer G.M. Lepeshev А.А. The influence of additives of alloying ceramic nanoparticles on the structural parameters and properties of hard alloys. Vestnik Sibirskogo gosudarstvennogo aerokosmicheskogo universiteta im.akademika M.F.Reshetneva. 2013. N 3, p.174-181 (in Russian).
- Davydov S.Ya., Apakashev R.A., Koryukov V.N. Trapping the nanoscale fraction of alumina particles. Novye ogneupory. 2016. N 2, p. 12-15. DOI: 10.17073/1683-4518-2016-2-12-15 (in Russian).
- Loitsyansky L.G. Fluid and gas mechanics. Мoscow: Drofa, 2003, p. 840 (in Russian).
- Makarov V.N., Davydov S.Ya. The theoretical fundamentals for improving the efficiency of ventilation in technological processes at industrial enterprises. Novye ogneupory. 2015. N 2, p. 59-63. DOI: 10.17073/1683-4518-2015-2-59-63 (in Russian).
- Makarov V.N., Potapov V.V., Gorshkova E.M. A promising way to increase the efficiency of high-pressure hydraulic dust control. Vestnik Zabaikal'skogo gosudarstvennogo universiteta. 2018. Vol. 24. N 5, p. 13-20. DOI: 10.21209/2227-9245-2018-24-5-13-20 (in Russian).
- Frolov A.V., Telegin V.A., Sechkerev Yu.A. Fundamentals of hydraulic dust control. Bezopasnost' zhiznedeyatel'nosti. 2007. N 10, p. 1-24 (in Russian).
- Fuchs N.A. Aerosol mechanics. Мoscow: Izd-vo AN SSSR, 1955, p. 352 (in Russian).
- Makarov V.N., Kosarev N.P., Makarov N.V., Ugolnikov A.V., Lifanov A.V. Effective localization of coal dust explosions
- using hydro-cyclone coagulation. Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo. 2018. Vol. 18. N 2, p. 178-189. DOI: 10.15593/2224-9923/2018.4.7 (in Russian).
- Davydov S.Ya., Apakashev R.A., Korukov V.N. Capturing Nanoparticles in Alumina Production. Refractories and Industrial Ceramics. 2016. Vol. 57. Iss. 1, р. 9-12. DOI: 10.1007/S11148-016-99-17-6
- Davydov S.Ya., Apakashev R.A. Korukov V.N. Utilization of Alumina Calcining Furnace Dust Containing Nanoparticles. Refractories and Industrial Ceramics. 2014. Vol. 55. Iss. 4, р. 291-294. DOI: 10.1007/511148-014-97-11-2
- Lyashenko V.I., Gurin A.A., Topolniy F.F., Taran N.A. Justification of environmental technologies and means for dust control of tailing dumps surfaces of hydrometallurgical production and concentrating plants. Metallurgical and mining industry. 2017. Iss. 4, р. 8-17.
- 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. Iss. 1, p. 103-106. DOI: 10.1007/s11148-015-9791-7
- Novakovskiy N.S., Bautin S.P. Numerical simulation of shock-free strong compression of 1D gas layer’s problem subject to conditions on characteristic. Journal of Physics: Conference Series. 2017. Vol. 894. N 1, p. 1-8. DOI: 10.1088/1742-6596/894/1/012067
- Alymenko N.I., Kamenskikh А.А., Nikolaev A.V., Petrov A.I. Numerical modeling of heat and mass transfer during hot and cool air mixing in a supply shaft in underground mine. Eurasian mining. 2016. N 2, p. 45-47. DOI: 10.17580/em.2016.02.11
- Wu D., Yin K., Yin Q., Zhang X., Cheng J., Ge D., Zhang P. Reverse circulation drilling method based on a supersonic nozzle for dust control. Applied Sciences. 2017. Vol. 7. Iss. 1, p. 5-20. DOI: 10.3390/APP7010005