Research of the Magnetic Field Inside a Drum Separator With Permanent Magnets

Dimova, Tatyana; Aprahamian, Bohos; Marinova, Mariya

doi:10.1109/elma.2019.8771679

Cited by 5 publications

(3 citation statements)

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“…Given the complex spatial geometry of a magnetic field, such a task is solved using a numerical finite-element method for a two-dimensional model employing the COMSOL Multiphysics software [21]. The structure of the magnetic field inside a drum separator with permanent magnets was considered in paper [22]. By applying a computer simulation while using a finite-element method, the authors derived a pattern of the separator's magnetic field distribution.…”

Section: Computer Simulation Of the Magnetic System Of A Disk Separatormentioning

confidence: 99%

Determining the force function distribution in the working zone of a disk magnetic separator

Shvedchykova¹,

Melkonova²,

Melkonov³

2019

EEJET

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A variety of forms, structural assemblies and magnetization directions of permanent magnets makes it possible to construct new magnetic systems for separation devices with the required topology of magnetic field in working gaps and acquisition of new functional properties [9]. Studies in this field are of theoretical and practical interest. 2. Literature review and problem statement Numerous publications report studies into magnetic systems of separators on permanent magnets. Features in using magnetic separators on permanent magnets were considered in paper [10]. It was shown that separators are distinguished by simplicity of the structure, low power consumption, they

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Section: Computer Simulation Of the Magnetic System Of A Disk Separatormentioning

confidence: 99%

Determining the force function distribution in the working zone of a disk magnetic separator

Shvedchykova¹,

Melkonova²,

Melkonov³

2019

EEJET

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“…The widespread use of magnetic separators for cleaning bulk materials from ferromagnetic inclusions, primarily in the food and related industries, actualizes the task of increasing their efficiency, which is understood to ensure maximum reliability of removal. One of the ways to increase the efficiency of devices for magnetic separation is the use of permanent magnets [1][2][3][4]. To improve the quality of purification of raw materials and finished products from magnetic impurities, the permanent magnets of the separators must have high magnetic properties and stable magnetic parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, as the analysis of publications [1][2][3][4][5][6][7][8][9][10][11][12][13][14] shows, a reasonable choice of material of permanent magnets and layout solutions of magnetic systems is an important stage in the design of new types of magnetic separators. At the same time, the question of the effect of the material of the magnets on the distribution of the magnetic field in the working zones of the magnetically separating devices requires attention.…”

Section: Introductionmentioning

confidence: 99%

Research of Magnetic Field Distribution in the Working Area of Disk Separator, Taking Into Account an Influence of Materials of Permanent Magnets

Shvedchykova

Melkonova

Romanchenko

2020

EUREKA: Physics and Engineering

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Based on the results of a numerical-field analysis of the distribution of the magnetic force field in the working area of the disk magnetic separator, designed to clean bulk substances from ferromagnetic inclusions, the influence of the magnetic material of the poles of the magnetic system on the field distribution is determined. A consistent study of two magnetic systems assembled on the basis of magnetic materials of different classes is carried out. The finite element method implemented in the COMSOL Multiphysics software environment is used to calculate the distribution of magnetic induction in a disk magnetic separator with rare-earth and ferrite magnets. Due to the complexity of the spatial geometry of the force field in the working area of the disk magnetic separator, a three-dimensional model of the magnetic system is developed. A comparative analysis of the distribution of the magnetic force field in the working area of the disk separator with a highly coercive magnetic system and with a magnetic system based on ferrite blocks is carried out. As a result of the analysis, it is found that the indicators of the intensity and heterogeneity of the magnetic field for a highly coercive magnetic system significantly exceed the corresponding parameters of a ferrite magnetic system. It is proved that when choosing magnets for the magnetic system of a disk separator, preference should be given to highly coercive alloys, the magnetic properties of which significantly exceed the magnetic properties of ferrite magnets. To reduce the cost of the magnetic system of the disk separator, the use of a combined magnetic system assembled from magnetic materials of different classes is proposed. Studies of combined magnetic systems with various mass fractions of magnetic materials are done. The ratio of the mass fractions of magnets of various properties in the poles of the magnetic system is determined, at which sufficiently high magnetic characteristics are provided in the working area. It is shown that the presence of a ferrite fraction in the magnetic poles not only reduces the cost of the magnetic system of the separator, but also reduces the mass of the system. The tasks of further research are justified.

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