Research Progress and Development Trend of Permanent Magnetic Separators in China and Abroad

Abstract

Magnetic separation is an integral part of mineral separation, and separator performance is the key factor in the process of magnetic separation. With the increasing development of constantly updated magnetic materials and magnetic separation process, for the development of the permanent magnetism and large-scale direction start separator, and solve the low grade, fine granularity, weak magnetic the mineral beneficiation opens up a new path. Permanent magnetic separator has the advantages of saving energy consumption, simple structure, convenient operation and maintenance, the advantages of lighter and stable performance, compared with the same type of electromagnetic separator has a more broad prospects for development. This article reviews the characteristics and research on permanent magnetic separator at home and abroad, analyzes the main problems of permanent magnetic separator at home and abroad and its development trend.

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

“…The main advantages and practical limitations of the magnetic systems for separators with a high gradient magnetic field (HGMS) and systems with an open gradient magnetic field (OGMS) were described in paper [12]. It should be noted that studies [10][11][12] fail to address the issues related to theoretical research into the power magnetic fields of separators; the permanent magnets are arranged mainly based on empirical experience. All this allows us to assert that it is expedient to undertake a theoretical study aimed at investigating patterns in the power magnetic field distribution in the working zones of separators in order to reasonably select a magnetic system configuration.…”

“…Thus, our analysis of publications [10][11][12][13][14][15][16][17][18] makes it possible to argue that at present there are no systemic solutions for determining the distribution of a force function in the working zones of devices for magnetic separation. Most publications report results from studying the influence of a shape and geometric dimensions of the magnetic systems of separators on the magnetic field distribution.…”

Effect of bubble size and spatial distribution on the flow and mixing of steel

“…Argon blowing and stirring the steel can facilitate the metallurgical reaction, enhance the mass transfer and heat transfer processes in the metallurgical reaction process, and complete the desulfurization, decarburization, impurity removal, and tempering processes, resulting in a more uniform steel temperature. Thus achieving the goal of improving the mechanical properties of steel without introducing new impurities, which is conducive to the production of clean steel [2]. Additionally, it improves the steel’s fluidity and prepares it for subsequent continuous casting [3].…”

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

“…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.…”

“…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.…”