RESEARCH OF MAGNETIC FIELD DISTRIBUTION IN THE WORKING AREA OF DISK SEPARATOR, TAKING INTO ACCOUNT AN INFLUENCE OF MATERIALS OF PERMANENT MAGNETS

Iryna Shvedchykova, Inna Melkonova, Julia Romanchenko

Abstract


Based on the results of a numerical-field analysis of the distribution of the magnetic force field in the working area of the disk magnetic separator, designed to clean bulk substances from ferromagnetic inclusions, the influence of the magnetic material of the poles of the magnetic system on the field distribution is determined. A consistent study of two magnetic systems assembled on the basis of magnetic materials of different classes is carried out. The finite element method implemented in the COMSOL Multiphysics software environment is used to calculate the distribution of magnetic induction in a disk magnetic separator with rare-earth and ferrite magnets. Due to the complexity of the spatial geometry of the force field in the working area of the disk magnetic separator, a three-dimensional model of the magnetic system is developed. A comparative analysis of the distribution of the magnetic force field in the working area of the disk separator with a highly coercive magnetic system and with a magnetic system based on ferrite blocks is carried out. As a result of the analysis, it is found that the indicators of the intensity and heterogeneity of the magnetic field for a highly coercive magnetic system significantly exceed the corresponding parameters of a ferrite magnetic system. It is proved that when choosing magnets for the magnetic system of a disk separator, preference should be given to highly coercive alloys, the magnetic properties of which significantly exceed the magnetic properties of ferrite magnets. To reduce the cost of the magnetic system of the disk separator, the use of a combined magnetic system assembled from magnetic materials of different classes is proposed. Studies of combined magnetic systems with various mass fractions of magnetic materials are done. The ratio of the mass fractions of magnets of various properties in the poles of the magnetic system is determined, at which sufficiently high magnetic characteristics are provided in the working area. It is shown that the presence of a ferrite fraction in the magnetic poles not only reduces the cost of the magnetic system of the separator, but also reduces the mass of the system. The tasks of further research are justified

Keywords


disk separator; magnetic induction; permanent magnet; combined magnets; ferromagnetic inclusions

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References


Li, Y., Yang, F. (2016). Research Progress and Development Trend of Permanent Magnetic Separators in China and Abroad. DEStech Transactions on Engineering and Technology Research. doi: https://doi.org/10.12783/dtetr/icvme2016/4873

Slusarek, B., Zakrzewski, K. (2012). Magnetic properties of permanent magnets for magnetic sensors working in wide range of temperature. Przeglad elektrotechniczny, 88 (7), 123–126.

Dimova, T., Aprahamian, B., Marinova, M. (2019). Research of the Magnetic Field Inside a Drum Separator With Permanent Magnets. 2019 16th Conference on Electrical Machines, Drives and Power Systems (ELMA). doi: https://doi.org/10.1109/elma.2019.8771679

Hisayoshi, K., Uyeda, C., Terada, K. (2016). Magnetic separation of general solid particles realised by a permanent magnet. Scientific Reports, 6 (1). doi: https://doi.org/10.1038/srep38431

Meshcheryakov, I. (2018). Spetsifika vybora magnitnyh materialov dlya magnitnyh separatorov. Kombikorma, 2, 22–24.

Sayko, O. P., Drobchenko, V. I., Kofanov, A. S., Podolyuh, S. M. (2012). Shkivnye zhelezootdeliteli na postoyannyh magnitah. Ugol' Ukrainy, 7, 43–45.

Romanyshyn, T. L. (2013). Obgruntuvannia vyboru materialu postiynykh mahnitiv dlia lovylnykh prystroiv. Rozvidka ta rozrobka naftovykh i hazovykh rodovyshch, 1 (46), 143–152.

Lungu, M. (2009). Separation of small nonferrous particles using a two successive steps eddy-current separator with permanent magnets. International Journal of Mineral Processing, 93 (2), 172–178. doi: https://doi.org/10.1016/j.minpro.2009.07.012

Zeng, S., Zeng, W., Ren, L., An, D., Li, H. (2015). Development of a high gradient permanent magnetic separator (HGPMS). Minerals Engineering, 71, 21–26. doi: https://doi.org/10.1016/j.mineng.2014.10.009

Gómez-Pastora, J., Xue, X., Karampelas, I. H., Bringas, E., Furlani, E. P., Ortiz, I. (2017). Analysis of separators for magnetic beads recovery: From large systems to multifunctional microdevices. Separation and Purification Technology, 172, 16–31. doi: https://doi.org/10.1016/j.seppur.2016.07.050

Karlov, A., Kondratenko, I., Kryshchuk, R., Rashchepkin, A. (2014). Magnetic system with permanent magnets for localization magnetic nanoparticles in a given region of the biological environments. Elektromekhanichni i enerhozberihaiuchi systemy, 4, 79−85.

Chen, H., Bockenfeld, D., Rempfer, D., Kaminski, M. D., Liu, X., Rosengart, A. J. (2008). Preliminary 3-D analysis of a high gradient magnetic separator for biomedical applications. Journal of Magnetism and Magnetic Materials, 320 (3-4), 279–284. doi: https://doi.org/10.1016/j.jmmm.2007.06.001

Myazin, V., Kilin, V., Yakubaylik, E. (2010). Perfection of methods and technology of highly magnetic iron ore concentration in connection with the innovations of the last years (by the example of the Siberian region). Vestnik ChitGU, 6 (63), 95–101.

Kravchenko, A. Y., Bovda, A. M. (2003). Combined permanent magnets: expansion of permanent magnets classification. Elektrotekhnika i Elektromekhanika, 3, 37–39.

Gerlici, J., Shvedchikova, I. A., Nikitchenko, I. V., Romanchenko, J. A. (2017). Investigation of influence of separator magnetic system configuration with permanent magnets on magnetic field distribution in working area. Electrical Electrical Engineering & Electromechanics, 2, 13–17. doi: https://doi.org/10.20998/2074-272x.2017.2.02




DOI: http://dx.doi.org/10.21303/2461-4262.2020.001106

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ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)