Angel Zabchev, Romeo Alexandrov
University of Mining and Geology “St. Ivan Rilski”, Sofia 1700, email: angel.zabtchev@mgu.bg
Abstract: Based on a patented electromagnetic separator with six electromagnets (EM), a supply voltage and thyristor rectifier are proposed for generating current through the electromagnets. The currents in the six electromagnets create a travelling magnetic field that transports the magnetic material. The control pulses and the harmonic composition of the current are analytically determined.
Keywords: electromagnetic separation, travelling magnetic field, thyristor rectifier control, harmonic composition of voltage and current
DOI: https://doi.org/10.58903/u17190835
CURRENT CONTROL OF THE ELECTROMAGNETIC SEPARATOR
References:
Donchev, R. V. & Klisuranov, G. S. (2004). Patent BG 64303 B1 № 104941. Electromagnetic separator, 30.09.2004 (in Bulgarian).
Fabris, L. A. & Cappelli, M. A. (2013). Travelling magnetic field plasma accelerator, Proceedings of the 33rd International Electric Propulsion Conference, The George Washington University, Washington, D.C., USA, IEPC–2013-86, October 6-10, 2013.
Kumar, H. S., Takahashi, M., & Ohnishi, N. (2020). Numerical simulation of particle acceleration in travelling magnetic field thruster. Transactions of the Japan Society for Aeronautical and Space Science. Aerospace Tech. Japan, 18, (6), 317-322, DOI: 10.2322/tastj.18.317
Berdyshev, A. S., Djumabayeva, Z. Z., Abdullaev, A. A. & Mussabekov, A. (2021). Study on the travelling magnetic field water purifier, ICECAE 2021, IOP Conf. Series: Earth and Environmental Science, 939 (2021) 012022, doi:10.1088/1755-1315/939/1/012022
Xu, Y., Wei, L., Han, B., Guo, E., Wang, M. & Su, Y. (2018). Effect of a traveling magnetic field on micropore formation in Al-Cu alloys. Metals, 8(6), 448; https://doi.org/10.3390/met8060448
Shvydkiy, E., Baake, E. & Koppen D. (2020). Liquid metal flow under travelling magnetic field—solidification simulation and pulsating flow analysis. Metals 10(4), 532, https://doi.org/10.3390/met10040532
Li, L. (2010). Electrical and magnetic separation of particles. ETDs. https://openscholarship.wustl.edu/etd/210
Stener, J. (2015). Wet low-Intensity magnetic separation: measurement methods and modelling. Lulea University of Technology, ISBN 978-91-7583-464-1 (print), ISBN 978-91-7583-465-8 (pdf).
Cao, S., Wei, D. & Li, J. (2019). Effect of magnetic field in magnetic separation column on particle separation process based on numerical simulation. Journal of Engineering Science and Technology Review 12 (2) 2019 53 – 58, doi:10.25103/jestr.122.08.
Singh, V., Nag, S., Srikakulapu, N. G. & Mukherjee, A. K. (2023). Development of a novel magnetic separator for segregation of minerals of dissimilar electromagnetic properties. Minerals Engineering 193, 108009 https://doi.org/10.1016/j.mineng.2023.108009.