Dynamic modeling of mineral bed mobility in centrifugal concentrators

DOI: http://dx.doi.org/10.30686/1609-9192-2021-2-114-119

Perepelkin M.A.¹, Sklyanov V.I.² ¹ Northeastern State University, Magadan, Russian Federation ² Norilsk State Industrial Institute, Norilsk, Russian Federation Russian Mining Industry №2 / 2021 р. 114-119

Abstract: The article discusses a method for determining the effective parameters of centrifugal concentrators with fluidization of a mineral bed with water through holes in the walls of a rotating cone. The device and the principle of operation of a laboratory setup for studying the constrained movement of mineral particles in a centrifugal field are described. Also, the optimization of the degree of loosening of the mineral bed in the centrifugal concentrator is considered. It was established experimentally that with existing water flow rates the condition of the mineral bed was close to the pressed state. Using the developed method of optimizing the ratio of water pressure in the fluidization system and the separation factor, the optimum water pressure and its flow rate were calculated in laboratory conditions. As a result, it was possible to raise the extraction during the first stage of gravity concentration by 2%. Therefore, it was determined that the degree of loosening depends on the correlation of the separation factor and the water pressure in the fluidization system. Based on the proposed approach, it is possible to develop an automation system to adjust the parameters of the centrifugal concentrators. Based on the results of calculating the balance of the concentration process in the gold extraction plant at the Kedrovskoe deposit, it was established that the application of the proposed methodology helped to improve the efficiency of the centrifugal free-flow concentrator.

Keywords: gravity beneficiation methods, centrifugal separation, centrifugal concentrators, fluidization, separation factor, gold beneficiation

For citation: Perepelkin M.A., Sklyanov V.I. Dynamic modeling of mineral bed mobility in centrifugal concentrators. Gornaya promyshlennost = Russian Mining Industry. 2021;(2):114–119. (In Russ.) DOI: 10.30686/1609-9192-2021-2-114-119.

Article info

Received: 26.03.2021

Revised: 02.04.2021

Accepted: 06.04.2021

Information about the author

Mikhail A. Perepelkin – candidate of technical sciences, Associate Professor of the Department of Road Transport, Associate Professor of the Department of Mining, North-East State University, the city of Magadan, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Vladimir I. Sklyanov – candidate of technical sciences, head of the department of development of mineral deposits, Norilsk State Industrial Institute, Norilsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

References

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