Kononov D., Pelykh I. Selection of rubber compound type for the manufacture of elements of a self-cleaning grate-panel screen for vibrating sieves
- Details
- Parent Category: Geo-Technical Mechanics, 2025
- Category: Geo-Technical Mechanics, 2025, Issue 174
Geotech. meh. 2025, 174, 170-178
SELECTION OF RUBBER COMPOUND TYPE FOR THE MANUFACTURE OF ELEMENTS OF A SELF-CLEANING GRATE-PANEL SCREEN FOR VIBRATING SIEVES
1Ukrainian State University of Science and Technology
2M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
UDC 622.078.135
Language: English
Abstract. In laboratory conditions, domestic rubber compound was experimentally selected whose technical characteristics most closely correspond to the operating requirements of the elastic rubber components designed for a dynamically active self-cleaning grate-panel screen of a vibrating sieve. The technical development — a screening surface — can be applied for particle size classification of abrasive and cohesion-prone bulk materials, such as crushed stone, granite, slag, blast furnace coke, limestone, or wet sand with clay impurities. The intensification of the screening process on the self-cleaning grate-panel screen is achieved by complex spatial oscillatory displacements of the peripheral sections of the horizontal shelves of the elastic rubber grate-panel elements, which directly form the screen cloth. These elements are rigidly fixed into the grooves of longitudinal grate-like supports of the screening surface without preliminary deformation. The choice of the optimal type of rubber compound, as the raw material for subsequent manufacturing of rubber elements for the self-cleaning grate-panel screen, is based on determining and further analyzing the principal standard physico-mechanical parameters measured on full-scale samples of rubber products. In particular, during laboratory studies, the following technical indicators were identified and calculated: relaxation coefficient, residual elongation, dynamic modulus of elasticity, and energy absorption coefficient. As a result of the comprehensive laboratory investigations on groups of full-scale rubber product samples fabricated from parametric series of five domestic rubber compounds, compound 2959 was recommended for further application. This compound is suitable for vulcanization-based production of grate-panel rubber elements that directly form the screen cloth of the self-cleaning grate-panel screen of a vibrating sieve. When manufacturing rubber elements from compound 2959 by pressing, it is recommended to introduce a technological mode of vulcanization, thanks to which their Shore A hardness indicators would be achieved to the maximum possible values.
Keywords: rubber compound, vibrating sieve, blast furnace coke, self-cleaning grate-panel screen, Shore A hardness.
REFERENCES
1. Zaselsky, V.Y. Popolov D.V., Zaitsev G.L., Bilodidenko S.V., Kononov D.O. andPelykh I.V. (2019), Udoskonalennya obladnannya ta protsesiv vuhlepidhotovky i koksosortuvannya metalurhiynoho vyrobnytstva [Improving the equipment and processes of coal preparation and coking plant sorting of metallurgical production], R.A. Kozlov, Kryvyi Rih, Ukraine.
2. Usachov, V.P. (1994), Tekhnolohichni liniyi ta kompleksy tsekhiv. Chastyna 2. Tekhnolohichni osnovy komponuvannya liniy u metalurhiynomu vyrobnytstvi. [Technological lines and complexes of workshops. Part 2. Technological foundations of the layout of lines in metallurgical production], ISDO, Kyiv, Ukraine.
3. Smyrnov, V.O. and Biletsky, V.S. (2012), Pidhotovchi protsesy zbahachennya korysnykh kopalyn [Preparatory processes of mineral processing], Eastern Publishing House, Donetsk branch of the Shevchenko Scientific Society, Donetsk, Ukraine.
4. Boiko, V.S. (2012), Tekhnolohiya ta obladnannya dlya zbahachennya korysnykh kopalyn [Technology and equipment for mineral processing], Condor Publishing, Kyiv, Ukraine.
5. Vasyliev, V.M. (2016), Teoriya ta praktyka prosiyuvannya sypuchykh materialiv [Theory and practice of screening bulk materials], O.M. Beketov National University of Urban Economy in Kharkiv, Kharkiv, Ukraine.
6. Linhares, T.B., Scari, A.S. and Vimieiro, C.B.S. (2024), "Causes of failures in vibrating screens: A literature review", Minerals Engineering, vol. 218, 109027. DOI: 10.1016/j.mineng.2024.109027
7. Bulat A.F., Dyrda V.I., Zviagylskyi E.D., Nadutyy V.P., Loginova A.P., Puhalsky V.N., Lysitsa V.I. and Morus, V.L. (2016), Elastomery v gornom dele [Elastomers in mining], Naukova dumka, Kyiv, Ukraine.
8. Bulat, A.F., Dyrda, V.I., Pukhalsky, V.N. and Lysytsia, M.I. (2018), "Development and creation of vibrating equipment using elastomers for the extraction, processing and beneficiation of mineral raw materials", Geotechnical Mechanics, vol. 138,
pp. 273–282.
9. Bulat, A.F., Dyrda, V.I. and Pukhalsky, V.N. (2013), "Machines and technologies for underground mining of uranium-containing ores based on elastomer structures", Geotechnical Mechanics, vol. 113, pp. 44–53.
10. Lin, D., Ji, J., Yu, Ch., Wang, X. and Xu, N. (2023), "A non-linear model of screen panel for dynamics analysis of a flip-flow vibrating screen", Powder Technology, vol. 418, 118312, https://doi.org/10.1016/j.powtec.2023.118312
11. Pelykh I. V., Uchitel O. D., Onatskyi S. M., Petrenko V. O., Bergeman G. V., Shybko O. V. and Ivashchenko V. P., National Metallurgical Academy of Ukraine (2010), Kolosnikovo sito [Colander sieve], State Register of Patents of Ukraine, Kiev, UA, Pat. No. 90387.
12. Pelykh, I.V., Belodedenko, S.V., Kononov, D.О. and Petrenko, V. A. (2009), "Rational design of the surface of a vibrating screen for metallurgical production", Metallurgical and Mining Industry, vol. 4, pp. 79–82.
13. Belodedenko, S.V., Kononov, D.О. and Pelykh, I.V. (2013), "Research of the coke screening process on a model of a vibrating screen", Metallurgical and Mining Industry, vol. 4, pp. 97–100.
14. Kononov, D.O., Yermokratiev, V.O. and Pelykh, I.V. (2024), "Development of methods for predicting the technological performance of a vibrating screen with elastic screens", System Technologies. Regional inter-university collection of scientific papers, vol. 2(151), pp.156–165. DOI: 10.34185/1562-9945-3-152-2024-16.
15. Poturaev, V.N., Chervonenko, A.G., Krush, I.I. and Lysytsia, M.I. (1983), "Methods for determining the mechanical characteristics of elastic materials", Voprosy mekhaniki rezinovykh konstruktsii tyazhelykh gorno-metallurgicheskikh mashin: tezisy dokladov simpoziuma [Issues of mechanics of rubber structures of heavy mining and metallurgical machines: abstracts of symposium reports], IGTM NANU, Dnipro, Ukraine, pp. 21‑22.
About the authors
Kononov Dmytro, Сandidate of Technical Sciences, Associate Professor of the Industrial Engineering Department, Dnipro Metallurgical Institute, Ukrainian State University of Science and Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. (Corresponding author), ORCID 0000-0001-9505-5298
Pelykh Ihor, Candidate of Technical Sciences, Scientific Researcher of Department of Mechanics of Mineral Processing Machines and Processes, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0009-0002-9899-7875