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Low-Frequency Magnetic Scanning Device and Algorithm for Determining the Magnetic and Non-Magnetic Fractions of Moving Metallurgical Raw Materials

1
Institute of Chemistry, Saint-Petersburg University, Petrodvorets, 26 Universitetsky prosp., 198504 Saint-Petersburg, Russia
2
Ural Scientific Research Institute of Metrology, 4 Krasnoarmeiskaya str., 620075 Ekaterinburg, Russia
3
Institute for Analytical Instrumentation, Russian Academy of Sciences, Rizhski pr., 26, 190103 St-Petersburg, Russia
4
LLC Inter-Regional Economic and Legal Office, 69 Blagodatnaya str., 196105 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(10), 2001; https://doi.org/10.3390/app9102001
Received: 25 March 2019 / Revised: 12 May 2019 / Accepted: 14 May 2019 / Published: 16 May 2019
(This article belongs to the Section Applied Physics)
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Abstract

The development of an algorithm to automate the process of measuring the magnetic properties of macroscopic objects in motion is an important problem in various industries, especially in ferrous metallurgy and at factories where ferrous scrap is a strategic raw material. The parameter that requires work control is the hidden mass fraction of a non-magnetic substance that is present in the ferromagnetic raw material. The solution to this problem has no prototypes. In our work, a simple measuring device and a mathematical algorithm for calculating the mass fraction of the non-magnetic fraction in a strongly magnetic matrix were developed. The device is an inductance coil, in which the angle of the electromagnet losses is related to the mass of the magnetic material moving the coil. The magnitude of the instantaneous values of the lost angle integral was compared with the result of weighing the object on scales. This allowed us to calculate the proportion of the magnetic and non-magnetic fractions. The use of this prototype is herein illustrated. The experimental results of the determination of the magnetic-fractional composition depending on the mass of scrap metal and its bulk and the magnetic characteristics are presented. View Full-Text
Keywords: software algorithm; magnetic properties; ferromagnetic; non-magnetic; metal detectors; inductance coil software algorithm; magnetic properties; ferromagnetic; non-magnetic; metal detectors; inductance coil
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kochemirovsky, V.A.; Kochemirovskaia, S.V.; Malygin, M.A.; Kuzmin, A.G.; Novomlinsky, M.O.; Fogel, A.A.; Logunov, L.S. Low-Frequency Magnetic Scanning Device and Algorithm for Determining the Magnetic and Non-Magnetic Fractions of Moving Metallurgical Raw Materials. Appl. Sci. 2019, 9, 2001.

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