Buildup of magnetic mineral particles on matrices determines the saturated deposit volume of minerals, which is of great importance in the high gradient magnetic separation (HGMS) systems. In this paper buildup of fine weakly magnetic minerals on the matrix is studied with a force equilibrium model. Elaborate rules of particle buildup on the matrix are presented. …
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Magnetic separation of ferrihydrite can be achieved by using magnetic seeding technique. Results showed that the separation efficiency of ferrihydrite by HGMS depends on the ratio of iron concentration to magnetite dosage (Table 1). When the amount of magnetite was small or the amount of Fe(III) is large, that is, the ratio of the amount of ...
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1. Introduction. High gradient magnetic separation (HGMS) has been a key technology for the processing of weakly magnetic ores (Bochkarev et al., 2004, Tripathy and Suresh, 2017, Xiong et al., 1998, Yamashita et al., 2018).However, the moderate separation selectivity achievable in the currently applied HGMS methods has limited their effective …
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The magnetic separation technology of fine coal desulfurization is shown in Fig. 1. The high-sulfur fine coal was classified as 0.5 mm/0.25 mm. Microwave energy of different frequencies obtained using a micro-processing system was applied to −0.5 mm/0.25 mm fine coal. The electromagnetic properties of different minerals were used to achieve ...
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Magnetic separation is a commonly used technique in metallurgy, coal industry, for wastewater treatment, etc., to extract and concentrate strongly magnetized particles from a powder or a suspension. High-gradient magnetic separation (HGMS) merged due to the development of conventional magnetic separation technology [1]. HGMS is regarded as a ...
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The capture of magnetic nanoclusters in high-gradient magnetic separation (HGMS) operations, the rate-limiting step in magnetic nanoparticle-based separations and …
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High gradient magnetic separation technology is a green production technology that has an unparalleled superiority in separating fine and weak magnetic particles.
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Particularly, MS technique can be further classified into high gradient magnetic separation (HGMS) and low gradient magnetic separation (LGMS) according to the magnitude of magnetic field gradient employed in the …
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The experimental performance of a high gradient magnetic separator has been previously reported by other workers in some detail for a CuO/Al 2 O 3 slurry. Less detailed results were also reported for slurries of Mn 2 O 3, Al, and α-Fe 2 O 3 particles with Al 2 O 3 representing a 20:1 range in particle sizes and a 200:1 range in magnetic susceptibility. Examination of these …
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traditional magnetic separators are incompetent on the purification for high-purity quartz, due to their insufficient magnetic force of impurity particles (Chen et al., 2016). In fact, high gradient magnetic separation (HGMS) can produce a sufficiently strong magnetic force for impurity particles to separate.
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As one of the most effective physical separation techniques, high gradient magnetic separators (HGMS) have been widely used for sorting essential metal ores, such as hematite, limonite, ilmenite, chromite, and rare earth, from non-magnetic gangue minerals (Zhou et al., 2021, Hu et al., 2020, Ross et al., 2022, Gao and Chen, 2010, Quast and Skinner, …
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Magnetic separation is a simple, efficient, cost-saving, and environment-friendly method to deal with the difference of materials in magnetism (Zhang et al., 2020, Iranmanesh and Hulliger, 2017, Zhu et al., 2017, Tripathy et al., 2014, Svoboda and Fujita, 2003).Among the types of magnetic separation, high gradient magnetic separation (HGMS) has been widely used …
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Rare earth oxides such as La2O3 and Gd2O3 are abundant in waste optical glass. The separation of rare earth oxides is beneficial to the recycling of rare earth resources. In this study, the rare earth oxide Gd2O3 particles were separated from La2O3 particles using high gradient magnetic separation, and the influence of different fluid media (i.e., water, …
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HGMS is applicable to water purification by a technique involving the addition and removal of finely divided magnetic seed materials which scavenge many waterborne contaminants. …
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The use of pulsating slurry has been found to be effective in overcoming matrix blockage and improving separation selectivity in high gradient magnetic separators (HGMS).
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Magnetic separation is a versatile technique used in sample preparation for diagnostic purpose. For such application, an external magnetic field is applied to drive the separation of target entity (e.g. bacteria, viruses, parasites and cancer cells) from a complex raw sample in order to ease the subsequent task(s) for disease diagnosis.
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The basic principle involved in high gradient magnetic separation (HGMS) lies in coal being diamagnetic (repulsed by a magnet) while pyrite is paramagnetic (attracted to a magnet). The mag- netic susceptibility of pyrite is 0.3 X 10-6 emu/g while this susceptibility of coal is --0.4 X 10-6 to --0.8 X 10-4 emu/g {1 emu = 1 gauss).
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The high magnetic field intensity and mineral magnetic differences were the critical factors influencing the magnetic separation of quartz from sea sand. The S-HGMS technology achieved effective pre-concentration of quartz from sea sand, reducing the handling capacity and providing a high-quality material for subsequent quartz refinement processes.
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Abstract: The experimental performance of a high gradient magnetic separator has been previously reported by other workers in some detail for a CuO/Al 2 O 3 slurry. Less detailed results were also reported for slurries of Mn 2 O 3, Al, and α-Fe 2 O 3 particles with Al 2 O 3 representing a 20:1 range in particle sizes and a 200:1 range in magnetic susceptibility.
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The magnetic matrix used in high gradient magnetic separator not only generates the high magnetic field gradient to increase magnetic force acting on magnetic particle, but …
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In Fig. 1, a long ferromagnetic cylindrical wire, which acts as the capture center, is placed in a stabilized water-based suspension of weakly magnetic nano-particles.The system (the wire and the suspension) is placed in a uniform external magnetic field H 0 →.The wire axis is perpendicular to the field. The existence of the system in the background uniform magnetic …
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This article was originally published with the title " High-Gradient Magnetic Separation " in Scientific American Magazine Vol. 233 No. 5 (November 1975), p. 46 doi:10.1038 ...
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ABSTRACT. Comprehensive utilization of tailings resources not only solves environmental problems but also creates huge economic benefits. In this paper, fine weakly magnetic particles were extracted from iron ore beneficiation tailings and silica (SiO 2) was separated and purified using a superconducting high gradient magnetic separator.Based on …
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The high gradient magnetic separator (HGMS) is a strong magnetic separator for the screening of weakly magnetic minerals.It is a new type of strong magnetic separator developed on the basis of a general …
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High gradient magnetic separation (HGMS) makes possible the efficient separation of very weakly magnetic particles of micron size for which conventional magnetic separators are ineffective. Filamentary ferromagnetic materials placed in large (10 kOe) background fields are used to obtain large surface areas of high field gradients. Potential applications in mineral …
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Therefore, magnetic separation could be an attractive method to recover the iron minerals. Magnetic separation is a method for the separation of particles on the basis of their magnetic properties. Magnetic separation was found effective in recycling, purification [9] and other areas. The iron minerals can be efficiently separated by magnetic ...
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The high gradient magnetic separation technique has been applied to separate paramagnetic erythrocytes from a cell suspension that also contained diamagnetic cells. Paramagnetism was induced in the red blood cells by oxidizing the iron atoms in the cell hemoglobin to the ferric state (methemoglobin). Diamagnetic cells were either untreated ...
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High gradiant magnetic separation5 – solves your magnetic separation problems The success of any magnetic separation process is governed by the property of the material to be collected and the structure of the separator to carry out the process. This can be expressed in the relationship between on one side the competing forces
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The separation of uranium oxide (UO 2) particles from soil-surrogate particles in aqueous suspensions was achieved using filtration enhanced by a magnetic field.Enhanced attraction of paramagnetic UO 2 colloids to a ferromagnetic stainless-steel filter placed in a strong magnetic field arises because of the positive magnetic susceptibility of the particles and the high …
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lnternatmnal Journal of Mineral Processing, 8 (1981) 165--175 Elsewer ScmntfflC Publmhlng Company, Amsterdam -- Printed in The Netherlands 165 HIGH-GRADIENT MAGNETIC SEPARATION: A SEARCH FOR A MATRIX MATERIAL J SVOBODA Ore Research Instttute, Modranska 23, 147 13 Prague 4 (Czechoslovakia) (Received June 2, 1980, accepted …
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