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

Shvedchykova, Iryna; Melkonova, Inna; Romanchenko, Julia

doi:10.21303/2461-4262.2020.001106

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…Paper [4] describes the process of upgrading a classic drum separator by changing the mode of operation of the feeder, as well as the design of the separating tank and its location; these solutions, however, improved the efficiency of detecting metallic inclusions only partially. An option to overcome these difficulties is to use different types of magnetic materials for permanent magnets [5]. However, this solution only slightly increases the proportion of metallic inclusions removed.…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

“…The structural scheme of the system of removal of metallic inclusions from bulk raw materials in the conveyor belt (Fig. 4) has been constructed, which, in comparison with similar systems [4,5], allows its joint work with the system of detection of metallic inclusions. It enables the exchange of data on the detected metals in raw materials.…”

Section: Developing the Software And Algorithmic Supportmentioning

confidence: 99%

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Designing a system that removes metallic inclusions from bulk raw materials on the belt conveyor

Zamikhovskіy

Levytskyi

Nykolaychuk

2021

EEJET

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Modern industrial technologies require raw materials of high purity from suppliers, especially due to the possible presence of inclusions of heterogeneous metals in them. The existence of metallic inclusions of heterogeneous metals in the raw materials leads to equipment failure, a decrease in the quality of output products, and, consequently, large financial losses. Since the main method of transporting raw materials in the industry is still a conveyor belt, this imposes additional conditions to control and remove metallic inclusions. For various reasons, current methods for removing metallic inclusions in the conveyor belt do not fully meet the needs of modern production. The main issue related to existing removal systems is the lack of intelligent interaction between these systems and the absence of information exchange between systems that detect and remove metallic inclusions. An alternative method for removing metallic inclusions of heterogeneous metals from loose medium has been proposed, which implies the tandem operation of the system that detects metallic inclusions and the system that removes them. The tandem operation of the two systems makes it possible to exchange information about a detected metallic inclusion and, as a result, to more flexibly use tools for the removal of metallic inclusion depending on the size and location of the metallic inclusion relative to the conveyor belt axis. At the same time, the control unit of the removal system makes it possible to control the conveyor belt itself, which allows the removal of complex metallic inclusions using the reverse of the electric drive of the belt, as well as enables a control check of the fact of removal. The developed algorithm of the removal system was implemented in the programming environment TIA-Portal. The introduction of this removal system could reduce the number of metallic inclusions in raw materials by 15‒20 %; moreover, its application is not limited to only one sector of the national economy

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Section: The Study Materials and Methodsmentioning

confidence: 99%

Section: Developing the Software And Algorithmic Supportmentioning

confidence: 99%

Designing a system that removes metallic inclusions from bulk raw materials on the belt conveyor

Zamikhovskіy

Levytskyi

Nykolaychuk

2021

EEJET

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“…To improve the efficiency of the electromagnetic mill, studies have been conducted aimed at tracking the movement of the working medium in the mill [5,6]. To improve the design of the electromagnetic mill so as to reduce energy consumption, various mills design solutions were proposed, mainly to ensure a uniform magnetic field inside the unit's mixing chamber to reduce electric losses [7][8][9][10][11]. However, it should be noted that the effect of the magnetic field on the properties of the material being ground during the operation of the electromagnetic mill has not been studied in the scientific literature.…”

Section: Introductionmentioning

confidence: 99%

Study of the Effect of Magnetic Field on Dispersion of Crushed Portland Cement and Tensile Strength of Cement Stone

et al. 2023

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This paper investigates the effect of a magnetic field on the grinding processes of Portland cement and the axial tensile strength of cement stone. It was found that the dispersion composition of Portland cement is affected by the magnetic field in two modes. Moreover, the grinding of Portland cement without a magnetic field has subtle modes within small particles (0.1–0.4 microns). The grinding of Portland cement with a magnetic field demonstrates an increase in the mode area of small particles and a decrease in the area of large particles (more than 1.6 microns), with an increase in processing time. In this work, the previously established magnetoplastic effect was confirmed in cement stone only in crystalline samples. The determined effect on cement stone is to reduce its strength by 53-59% and simultaneously increase relative deformation by 63–149%, depending on the specimen size and type. The magnetoplastic effect is also visually recorded on scans of the crack edges in cement stone examined using probe microscopy. The obtained experimental data confirm the validity of the proposed hypothesis of the effect of the magnetic field on polycrystalline materials with isotropic structure, in particular portland cement and cement stone, which consists in the fact that the magnetic field contributes to the accumulation of dislocations in the material, an acceleration of their movement, and the development of cracks. Doi: 10.28991/CEJ-2023-09-05-015 Full Text: PDF

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“…However, development of cassiterite beneficiation techniques has been carried out using flotation, electro and bio-flotation [9]- [23]. Sometimes, cassiterite was also could be separated using different magnetic separation techniques [24]- [33]. Microwave pre-treatment and hydrometallurgical methods were adapted also to recover cassiterite mineral and extract the tin metal [34]- [41].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Cassiterite and Topaz Minerals from an Old Metallurgical Dump, Eastern Desert of Egypt

Ibrahim¹,

Yassin²,

Boulos³

et al. 2022

JMMCE

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Huge amounts of tailing dumps as a result of mines' blasting operations were impacting economic and environmental problems. Evaluation of one of these tailing dumps of the Eastern Desert of Egypt showed the presence of reasonable amount of cassiterite mineral reaching 0.199% SnO 2 . The mineral cassiterite was found as finely disseminated particulates, reached to 5 microns, within varieties of quartz-feldspar-hornblende-biotite granitic formations. In the present study, the processing regime considered from the beginning the alignment between reaching cassiterite mineral liberation size, and its extreme brittleness character. Stirring ball milling technique was applied to produce −0.51 mm product with minimum fines as possible, which was left aside for a separate study. The ground product −0.51 + 0.074 mm was subjected to joint shaking table/dry high intensity magnetic separation techniques after splitting it into two fractions, −0.51 + 0.21 mm and −0.21 + 0.074 mm. Each fraction was separately subjected to "Wilfley" shaking table. At optimum conditions, a shaking table concentrate was obtained with 0.29% SnO 2 and an operational recovery reached 96.94% from a feeding contained 0.19% SnO 2 . The heavies and the two middling products after shaking table were directed separately after dryness to dry high intensity magnetic separation using "Eriez" rare earth roll separator, meanwhile the light fractions were rejected. Mathematically designed experiments were applied to optimize the separation process. At optimum conditions, a final cassiterite concentrate was obtained with 11.25% SnO 2 , and an operational recovery 94.08%. In addition, a topaz mineral concentrate was separated at splitter angle 65˚.

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

Cited by 7 publications

References 8 publications

Designing a system that removes metallic inclusions from bulk raw materials on the belt conveyor

Designing a system that removes metallic inclusions from bulk raw materials on the belt conveyor

Study of the Effect of Magnetic Field on Dispersion of Crushed Portland Cement and Tensile Strength of Cement Stone

Recovery of Cassiterite and Topaz Minerals from an Old Metallurgical Dump, Eastern Desert of Egypt

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