Dyrda V.I., Kobets A.S., Pukhalskyi V.N., Kozub Yu.G., Chernii O.A. Dynamics of vibratory partitioned feeders for the uranium ore drawing and feeding

Details
Parent Category: Geo-Technical Mechanics, 2020
Category: Geo-Technical Mechanics, 2020, № 151

Geoteh. meh. 2020, 151, 95-102

  DOI: https://doi.org/10.1051/e3sconf/201910900023

Dynamics of vibratory partitioned feeders for the uranium ore drawing and feeding

1Dyrda V.I., 2Kobets A.S.,3Pukhalskyi V.N., 4Kozub Yu.G., 1Chernii O.A.

1Institute of Geotechnical Mechanics named by N. Poljakov of NAS of Ukraine, 2Dnipro State Agrarian and Economic University, 3Estern Mining and Processing Plant, 4Luhansk Taras Shevchenko National University

UDC 678.4.06:621.81

Language: English

Abstract.

Rate of the world economy growth is inextricably associated with development of energy industry. According to the International Energy Agency, world energy consumption will soon increase by one third; its deficit will be covered, among other things, by intensive development of nuclear power engineering. Today, nuclear-power industry is the only stably developing industry, which successfully competes with traditional sources of energy, such as oil, gas, coal, etc. Today, there are 15 nuclear power-generating units in Ukraine with a total capacity of more than 15 million kW presenting almost half of the country’s total electricity. Ukraine is provided with sufficient reserves of raw materials and is among the top ten world producers of uranium. Ukraine began produce uranium ore in 1946 in the Zheltorechensky and Pervomaisky deposits; since 1951, all works were performed by the ore-mining complex No. 9 (now, it is the state enterprise “Eastern Mining and Processing Plant” in the city of Zhovti Vody). The “VostGOK” state company is the only enterprise, which extracts and processes uranium ores and produces natural uranium concentrate in full harmony with the world standards. Uranium ore is extracted by underground method; ore is drawn and fed from the panels by heavy mining vibratory feeders. In this paper, the authors consider dynamics of sectional vibratory feeders with rubber elastic couplings, and describe method for determining the feeder parameters and dependence between the feeder’s intrinsic oscillation frequency and stiffness parameters of the drive section and platform length as well as ratio of oscillating masses in the feeder and platform. Use of vibratory feeders (including sectional ones) and schemes for the ore vibrating drawing, feeding and loading in underground conditions allowed to mechanize one of the most time-consuming and dangerous processes of uranium ore mining and to solve the following problems: to improve effectiveness of the lumpy rock mass drawing and loading by 2.5-3 times; to increase intensity of mining operations and reduce life of the excavation blocks and horizons; to reduce labor intensity and cut cost of the process of ore drawing and loading; to improve uniformity of the rock-mass outflowing from the discharge opening and to reduce by 3-5 times frequency of the large-lump material freezing (use of sectional feeders reduces number of freezes by 25-60 times); to increase size of commercial lump panels; practically to exclude traumas during the process of ore drawing and loading (usually, it presents 30-60% of all traumas caused by the underground operations); to mechanize process of ore drawing and loading, and to create conditions for implementation of low-waste cyclic-and-continuous mining technology.

Keywords:

vibratory sectional feeder, feeder dynamics, uranium ore, frequency characteristics of vibratory feeders

References:

1.   Puhalskiy, V.N., Sinchuk, V.V. and Basarab, N.N. (2017), “Production and processing of uranium ore in Ukrain”, Geo-Technical Mechanics, no. 133, pp. 27-33.

2.   Poturaev, V.N., Dyrda, V.I. Poddubnyy, I.K. et al. (1989), Vibrodostavochnyye kompleksy v tekhnologiyakh razrabotki rudnykh mestorozhdeniy [Vibro-delivery complexes in ore mining technologies], Naukova dumka, Kyiv, USSR.

3.   Kornev, G.N. (1968), Povyshenie effektivnosti vibratcionnogo vypuska rudy iz blokov na osnove izucheniia mehanizma protcessa [Improving the efficiency of vibrational ore extraction from blocks based on the study of the process mechanism], Nauka, Leningrad, USSR.

4.   Poddubniy, I.K. (1982), “Industrial studies of operating modes and structural elements of vibrating mining feeders”, Metallurgicheskaya i gornorudnaya promyshlennost [Metallurgical and mining industry], no. 2, pp. 43-44.

5.   Bulat, A.F., Dyrda, V.I., Lysytsya, M.I. and Grebenyuk, S.M. (2018), “Numerical Simulation of the Stress-Strain State of Thin-Layer Rubber-Metal Vibration Absorber Elements Under Nonlinear Deformation”, Strength of Materials, no. 3 (50), pp. 387-395.
https://doi.org/10.1007/s11223-018-9982-9

About the authors:

Dyrda Vitalii Illarionovych, Doctor of Technical Sciences (D. Sc.), Professor, Head of Department of Elastomeric Component Mechanics in Mining Machines, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Science of Ukraine, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Kobets Anatolii Stepanovych,Doctor of Public Administration, Professor, Rector, Dnipro State University of Agriculture and Economics, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Pukhalskyi Viktor Mykolaiovych, Candidate of Technical Sciences (Ph. D.), Chief Engineer in Eastern Mining and Processing Plant, Jovti Vody, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Kozub Yurii Hordiiovych, Candidate of Technical Science (Ph. D.), Head of the Department of Physical-Technical Systems and Informatics, Lugansk Taras Shevchenko National University, Starobilsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Chernii Oleksandr Anatoliiovych, Senior Lecturer, Dnipro State Agrarian and Economic University, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.