- BUILDING MATERIALS AND PRODUCTS
- Impact Effects When Dispersing Mineral Materials In Vortex Layer Apparatuses
- UDC 691.542 DOI: 10.33622/0869-7019.2021.05.19-25
Ruslan A. IBRAGIMOV, e-mail: email@example.com
Farid R. SHAKIRZYANOV, e-mail: firstname.lastname@example.org
Kazan State University of Architecture and Civil Engineering, ul. Zelenaya, 1, Kazan 420043, Russian Federation
Evgenij V. KOROLEV, e-mail: email@example.com
Saint Petersburg State University of Architecture and Civil Engineering, ul. 2-ya Krasnoarmeyskaya, 4, St. Petersburg 190005, Russian Federation
Abstract. The article deals with the issues of impact interaction of particles of a dispersed material with grinding bodies. Using the ANSYS software package, the dependences of the maximum compressive stresses on the average size of the particles to be ground, as well as the speed of movement of the grinding bodies on the critical diameter of the particles to be ground, have been calculated. It is shown that an increase in the mass of grinding bodies leads to a natural increase in the consumption of active power of the apparatus of the vortex layer. At the same time, the amount of the crushed substance in the apparatus does not affect the active power consumption. It is noted that the specific grinding energy exponentially increases with a decrease in the average particle diameter, while a further increase in energy practically does not cause the formation of new surfaces. A method for determining the ultimate compressive strength of the crushed material is developed and a model of the impact of a particle on a ferromagnetic rod is constructed. The dependences of the influence of the particle diameter on the maximum stress and the speed of movement of ferromagnetic bodies on the critical diameter of Portland cement particles are obtained. This result can be used to determine the effect of the speed of movement of ferromagnetic bodies on a set degree of grinding
Key words: grinding, vortex layer, energy intensity, required speed of movement of ferromagnetic bodies, particle diameter.
1. Avvakumov E. G. Mekhanicheskie metody aktivatsii khimicheskikh protsessov [Mechanical methods for activating chemical processes]. Novosibirsk, Nauka Publ., 1980. 297 p. (In Russian).
2. Hint J. A. Osnovy proizvodstva silikal'tsitnykh izdeliy [Fundamentals of the production of silicalcite products]. Leningrad, Gosstroyizdat Publ., 1962. 642 p. (In Russian).
3. Logvinenko D. D., Shelyakov O. P., Pol'shchikov G. A. Determination of the main parameters of vortex bed apparatus. Chemical and Petroleum Engineering, 1974, vol. 10, pp. 15-17.
4. Urakaev F. Kh., Massalimov I. A. Energy fluctuations and particle emission in a crack mouth. Physics of the Solid State, 2005, vol. 47, no. 9, pp. 1675-1680.
5. Sevostyanov V. S., Ural'skiy V. I., Sevost'yanov M. V. Resurso-energosberegayushchee oborudovanie i kompleksy dlya pererabotki prirodnykh i tekhnogennykh materialov [Resource-saving equipment and complexes for processing natural and man-made materials]. Belgorod, BGTU Publ., 2017. 315 p. (In Russian).
6. Ibragimov R. A., Korolev E. V., Deberdeev T. R., Leksin V. V. Strength of heavy concrete on Portland cement treated in a vortex layer machine. Stroitel'nye materialy, 2017, no. 10, pp. 28-31. (In Russian).
7. Logvinenko D. D., Shelyakov O. P. Intensifikatsiya tekhnologicheskikh protsessov v apparatakh s vikhrevym sloem [Intensification of technological processes in devices with a vortex layer]. Moscow, Tekhnika Publ., 1976. 144 p. (In Russian).
8. Ibragimov R. A. et al. Efficiency of activation of mineral binders in vortex-layer devices. Magazine of Civil Engineering, 2018, no. 82(6), pp. 191-198.
9. Ibragimov R. A., Korolev E. V., Deberdeev T. R., Leksin V. V. Efficient complex activation of Portland cement through processing it in the vortex layer machine. Structural Concrete, 2019, no. 20(2), pp. 851-859.
10. Khodakov G. S. Fizika izmel'cheniya [Physics of grinding]. Moscow, Nauka Publ., 1972. 308 p. (In Russian).
11. Khaynike G. Tribokhimiya [Tribochemistry]. Moscow, Mir Publ., 1987. 584 p. (In Russian).
12. Gorlov E. G., Red'kina N. I., Khodakov G. S. New approaches to determining the energy consumption of the grinding process. Khimiya tverdogo topliva, 2009, no. 6, pp. 63-71. (In Russian).
13. Gusev A. I. High-energy grinding of non-stoichiometric compounds. Uspekhi fizicheskikh nauk, 2020, vol. 190, no. 4, pp. 371-395. (In Russian).
14. Mischenko M., Bokov M., Grishaev M. Activation of technological processes of materials in the device rotary electromagnetic field. Technical Sciences, 2015, vol. 2, pp. 3508-3512.
15. Pavlov A. N., Gol'tsov Yu. I. On the theory of shock activation of cement mixture. Part 1. Impact on the strength of concrete. Nauchnoe obozrenie, 2017, no. 1, pp. 6-10. (In Russian).
16. Fedyuk R. S., Mochalov A. V., Lesovik V. S. Modern methods of activation of binder and concrete mixtures (review). Vestnik Inzhenernoy shkoly DFU, 2018, no. 4(37), pp. 85-99. (In Russian).
17. Uvarov V. A., Shaptala V. G., Shaptala V. V., Ovchinnikov D. A. New direction of mechanical activation of cement. Vestnik BGTU im. V. G. Shukhova, 2013, no. 3, pp. 68-73. (In Russian).
18. Lapshin O. V., Boldyrev V. V., Boldyreva E. V. Mathematical model of the grinding and mixing of powder binary solids in a high-energy mill. Russian Journal of Physical Chemistry A, 2019, vol. 93, no. 8, pp. 1592-1597.
19. Boldyrev V. V. Mechanochemical processes with the reaction-induced mechanical activation. Chemo-mechanochemical effect. Russian Chemical Bulletin, 2018, vol. 67, no. 6, pp. 933-948.
- For citation: Ibragimov R. A., Shakirzyanov F. R., Korolev E. V. Impact Effects when Dispersing Mineral Materials in Vortex Layer Apparatuses. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2021, no. 5, pp. 19-25. (In Russian). DOI: 10.33622/0869-7019.2021.05.19-25.