FEATURES OF CONSTRUCTING POLYGRADIENT MATRICES FOR HIGH-GRADIENT SEPARATORS WITH SUPERCONDUCTING MAGNETIC SYSTEMS

The features of constructing matrices with collecting elements for high-gradient magnetic separators with superconducting magnetic systems for treatment of weakly magnetic feedstock are discussed. It is shown that such matrices should have considerably smaller mass of ferromagnetic elements as against the earlier used matrices in order to minimize level of the magnetic interaction between the collecting elements and superconducting magnetic systems. A few novel matrices with low ferromagnetic fill factor from 6 to 38% are proposed and manufactured, namely, the matrices with prismatic collecting elements, rod and plate-like matrices, as well as matrices made of composites with impregnations of small-size ferromagnetic concentrators on the collecting surface. Their magnetic force characteristics are calculated, and the results are presented in the form of graphs and magnetic charts of the working space of the matrices. The model cartridges with new type matrices are pretested in the static magnetic field of high-capacity electromagnetic installation at different densities of magnetic flux. It is shown that in the fields of the superconducting magnetic systems, it is possible to reach much higher magnetic forces than in the present-day industrial separators with high-capacity electromagnetic systems.

Acknowledgements: The present work is funded by the Ministry of science and higher education of the Russian Federation under the Agreement No. 14.604.21.0175 from 29 September 2017, ID RFMEFI60417X0175.

For citation: Tagunov E.Ya., Izmalkov V. A., Puchkov V. A., Diev D. N. Features of constructing polygradient matrices for high-gradient separators with superconducting magnetic systems . MIAB. Mining Inf. Anal. Bull. 2019;(9):102-114. [In Russ]. DOI: 10.25018/0236-1493-2019-09-0-102-114.

Keywords

High-gradient magnetic separation, high-gradient magnetic separator, polygradient separator, collecting element, polygradient matrix, superconducting magnetic system.

Issue number: 9
Year: 2019
ISBN: 0236-1493
UDK: 622.778.621.928
DOI: 10.25018/0236-1493-2019-09-0-102-114
Authors: Tagunov E. Ya., Izmalkov V. A., Puchkov V. A., Diev D. N.

About authors: Е.Ya. Tagunov (1), Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail: tagunov@magnetite.ru, V.A. Izmalkov (1), Cand. Sci. (Eng.), e-mail: izmalkov@magnetite.ru, V.A. Puchkov (1), Cand. Sci. (Phys. Mathem.), e-mail: puchkov@magnetite.ru, D.N. Diev, Deputy Head of Laboratory, e-mail: dndiev@gmail.com, National Research Centre «Kurchatov Institute», 123182, Moscow, Russia, 1) Limited Liability Company «MAGNЕTITE Ltd», 121205, Moscow, Russia. Corresponding author: Е.Ya. Tagunov, e-mail: tagunov@magnetite.ru.

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