Issue |
E3S Web Conf.
Volume 383, 2023
International Scientific Conference Transport Technologies in the 21st Century (TT21C-2023) “Actual Problems of Decarbonization of Transport and Power Engineering: Ways of Their Innovative Solution”
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Article Number | 04085 | |
Number of page(s) | 6 | |
Section | Mechanical Engineering and New Energy Technologies | |
DOI | https://doi.org/10.1051/e3sconf/202338304085 | |
Published online | 24 April 2023 |
Recycled strontium hexaferrite powder behavior in the magneto fluidized state in dependence of the chamber fill factor
1
Southern federal university, 105/42 Bolshaya Sadovaya Street, Rostov-on-Don, 344006, Russia
2
Don State Technical University, 1, Gagarin Square, Rostov-on-Don, 344000, Russia
* Corresponding author: iegorov@sfedu.ru
The magnetic powders affected by external magnetic fields can be transferred in the pseudo fluidized state to intensify the process of permanent magnets production. The behavior of the fluidized fine strontium hexaferrite powder with an average particle size 0.93 μm obtained by recycling old electric engine stators was studied. Mutually perpendicular constant and alternating gradient magnetic fields were used to form the magneto fluidized bed from the powder. The rheology state of the magnetic powder can be controlled by the parameters of the electromagnetic fields. The powder was affected by a constant field with induction values from 3 mT to 43 mT and alternating gradient magnetic field with induction gradient values from 87 mT/m to 317 mT/m. The chamber bulk fill varied from 4% to 100%. To study the rheological state of the powder in the chamber, we used an inductive method – an inductive coil was put on the chamber and the moving powder particles induced the current in the coil. The values of the current allowed to estimate the mobility of the powder particles in the magneto fluidized bed. The paper presents the results of experimental studies how electromagnetic fields regimes influences on the rheology of the fluidized powder. Methods of choosing the fields regimes providing the rheological state optimal for the required technological process depending on the chamber fill factor are described.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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