Influence of viscosity resistance on the final velocles of stressed motion of particles

Turbulizing centrifugal separators are widely used in the enrichment of ores and technogenic raw materials containing fine particles of noble metals and minerals with increased density. A distinctive feature of these devices is the way of supplying loosening water through the holes in the turbulizer, installed inside the rotating cone. When analyzing the laws of turbulent centrifugal separation it was determined that in the mechanism of formation of the near wall layer of the centrifugal separator a significant role is played by material segregation, in which the finely dispersed particles of the valuable component are gradually moving deeper into the near wall layer. In its compacted state, small particles of the valuable component move on the surface of larger rock particles, but, nevertheless, this movement is limited by the action of traction forces and the roughness of the surface of the particles. Turbulization loosens the near wall layer and changes the position of both valuable component particles and rock particles, so that those particles, whose movement was difficult before the turbulization, get the opportunity to move into the depth of the groove. Achievement of conditions for effective segregation of particles in grooves of turbulizing centrifugal separator will make it possible to realize its operation in accumulation mode with obtaining rich heavy fraction with high extraction of heavy minerals. In turn, creation of such conditions can be provided by optimizing the parameters of loosening of the material in the near wall layer.

Penkov P. M., Morozov Yu. P., Prokopyev S. A. Influence of viscosity resistance on the final velocles of stressed motion of particles. MIAB. Mining Inf. Anal. Bull. 2022;(11-1):119— 126. [In Russ]. DOI: 10.25018/0236_1493_2022_111_0_119.

Penkov P.M.¹, research engineer, Pavel.Penkov@m.ursmu.ru, ORCID ID: 0000-0001-9531-1896;
Morozov Yu. P.¹, Dr. Sci. (Eng.), Professor, ORCID ID: 0000-0003-0554-5176
Prokopyev S. A.², Cand. Sci. (Eng.), General Director,
¹ Federal State Budgetary Educational Institution of Higher Education “Ural State Mining University”, 30 Kuibyshev str., Yekaterinburg, Russia, 620144;
² LLC Research and Production Company “Spirit”, Russia, 66403, Irkutsk, st. Lermontov, 128 k. 2.

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