Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) Web of Science
  • 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:
    Farid R. SHAKIRZYANOV, e-mail:
    Kazan State University of Architecture and Civil Engineering, ul. Zelenaya, 1, Kazan 420043, Russian Federation
    Evgenij V. KOROLEV, e-mail:
    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.
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  • 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.