Low-Frequency Magnetic Scanning Device and Algorithm for Determining the Magnetic and Non-Magnetic Fractions of Moving Metallurgical Raw Materials oleh Vladimir A. Kochemirovsky, Svetlanav V. Kochemirovskaia, Michael A. Malygin, Alexey G. Kuzmin, Maxim O. Novomlinsky, Alena A. Fogel, Lev S. Logunov