Rotating flow characteristics in centrifugal high gradient magnetic …

In this work, the capture characteristics of magnetic wires rotating at two different patterns, i.e., revolving around the center of separating cylinder and spinning around the axis of wire in a ...

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Particle capture of elliptic cross-section matrices for parallel …

Purpose – The purpose of this paper is to model the particle capture of elliptic magnetic matrices for parallel stream type high magnetic separation, which can be a guidance for the development of novel elliptic cylinder matrices for high-gradient magnetic separation (HGMS). Design/methodology/approach – The magnetic field distribution around the elliptic matrices is …

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Study on external magnetic field improving the capture of Fe-based fine

In this work, a new method using an external magnetic field enhanced the capture of Fe-based fine particles by magnetic fibers was proposed. The process of Fe-based fine particle capture by magnetic fibers in two structure arrangements (staggered/parallel) was numerically simulated based on a computational fluid dynamics-discrete phase model (CFD-DPM) method.

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Removal of Magnetic Fine Particles From Carbon Black …

This makes it possible to capture the magnetic fine particles without clogging the filter under dry condition. ... Pyrite concentrate has been the mineral resource for sulfur acid production in ...

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Development of a high-gradient magnetic separator for …

HGMS has demonstrated its high efficiency in the capture of fine weakly magnetic particles [14, 15].However, non-magnetic particles are always being entrapped in magnetic products during the process of separation, namely, entrainment phenomenon, which seriously deteriorates the quality of magnetic products [9].The capture of particles in HGMS is a process …

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Centrifugal high gradient magnetic separation of fine …

High gradient magnetic separation (HGMS) has been an effective method for the concentration or removal of fine para-magnetic particles from suspension, but its powerful magnetic capture to magnetic particles results in the mechanical entrainment of non-magnetic particles in magnetic product, and thus reduces the separation selectivity.

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Numerical simulation of capture process of fine particles in

In the present work, a numerical method was adopted to study the capture process of fine particles in two electrostatic precipitators (ESPs) with corrugated and parallel plates, respectively. 1 The simplified models were established to evaluate and predict the distribution of electrostatic field, gas dynamic, particle charging, and transport behavior.

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Simulation of dynamic magnetic particle capture and …

2-D Simulation of ultra-fine particle capture by a single-wire magnetic collector. L. P. Davies R. Gerber. Engineering, Materials Science. ... The entrapment of fine colloidal paramagnetic (and diamagnetic) particles at magnetic capture centers in the colloid is reviewed. The effect of thermal diffusion on the entrapment from a static …

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Dynamic Trajectory and Capture of Fine Dust by …

The particles were assumed to be spherical and to have a constant magnetic moment, m. In an external magnetic ﬁeld, the magnetic force, Fm, acting on the ferric magnetic particles depends on the particle magnetization, Mp, and the magnetic ﬁeld intensity, H, and can be written as follows (Lawson et al. 1977): Fm Dm 0V p ¢ .Mp r/H; (2) where m

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Capture effect of dry magnetic separator on biotite in fine …

In the initial stage of magnetic separation (t < 0.9 s), the biotite particles in the fine aggregate have a higher relative magnetite volume than the remaining particles, and the biotite particles show a higher relative permeability, which makes it easier to be first captured by the magnetic separator. Under the action of high magnetic ...

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Comparative magnetic capture characteristics of revolving …

High gradient magnetic separation technology is a green production technology that has an unparalleled superiority in separating fine and weak magnetic particles. As the characteristics of poor, fine, and heterogeneous in weakly magnetic mineral resources (hematite, wolframite, rhodochrosite, etc.), the importance of developing the technology ...

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Study on capture radius and efficiency of fine weakly magnetic …

Assuming the slurry is well mixed, the capture efficiency is defined by the fraction of the magnetic particles captured or the magnetic particles entering the capture zone and it can be calculated using Eq. (6). Eq. (6) indicates that the efficiency is dependent heavily on the value of d/a and a range of d/a within 0.1–10 was adopted.

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The influence of interaction between orthogonal …

When a uniform magnetic field was added along the Y-axis, No.2 magnetic fiber inhibited the capture of Fe-based fine particles by No.1 magnetic fiber. However, No.1 magnetic fiber could have different effect on the capture …

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Simulation of particle accumulation in high gradient magnetic

High gradient magnetic separation technology is a green production technology that has an unparalleled superiority in separating fine and weak magnetic particles. As the characteristics of poor, fine, and heterogeneous in weakly magnetic mineral resources (hematite, wolframite, rhodochrosite, etc.), the importance of developing the technology ...

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Magnetic Nanoparticles: From Design and …

Magnetic nanoparticle devices or magnetic composites are attractive for drug delivery due to their ability to respond to exogenous stimuli via a magnetic field [8]. This allows controlling drug release in spatial, temporal, and dosage …

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Removal of SUS304 fine particles transformed into …

Removal of magnetic fine particles from carbon-black powder by utilizing the high gradient magnetic separation with a newly developed magnetic wire filter under dry condition was studied.

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Magnetic Separation

These separators can capture very fine or weakly magnetic particles that traditional magnetic separators struggle to handle. Advantages: Improved separation efficiency for fine particles. Enhanced recovery of valuable minerals from low-grade ores and industrial minerals. 2. Superconducting Magnetic Separators. Description:

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Centrifugal dry magnetic separation of fine magnetic minerals

With an attempt to address this significant problem in the DMS process, the DMS process in centrifugal field was proposed, and a novel centrifugal dry magnetic separator (cDMS) was developed to enhance the separation efficiency for fine particles [23].In this investigation, the mechanical structure and magnetic field characteristics of the separator were introduced; and …

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Simulation of dynamic magnetic particle capture and …

Moreover, the main factor for determining the performance of an HGMS system appears to be magnetic particle accumulation or buildup around the collector and not magnetic particle capture [21].This is because the accumulation of magnetic particles on, for example, a wire changes the geometry of the wire [22], consequently affecting the flow pattern and …

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Study on capture radius and efficiency of fine weakly magnetic …

DOI: 10.1016/J.MINENG.2015.02.001 Corpus ID: 96092704; Study on capture radius and efficiency of fine weakly magnetic minerals in high gradient magnetic field @article{Zheng2015StudyOC, title={Study on capture radius and efficiency of fine weakly magnetic minerals in high gradient magnetic field}, author={Xiayu Zheng and Yu-hua Wang …

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Dynamic capture and accumulation of multiple types of …

Capture and accumulation are clearly revealed by the trajectories of multiple types of particles. Single-wire has a much higher capture selectivity than multiwire matrix. High …

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Study on external magnetic field improving the capture of Fe-based fine

In this work, a new method using an external magnetic field enhanced the capture of Fe-based fine particles by magnetic fibers was proposed. The process of Fe-based fine particle capture by ...

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The influence of interaction between orthogonal magnetic …

The results show that the interaction between orthogonal magnetic fibers could either inhibit or promote the capture of Fe-based fine particles by adjacent magnetic fibers.

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Capture effect of dry magnetic separator on biotite in fine …

A series of magnetic separation experiments and FEM-DEM simulations were carried to study the dynamic capture behavior of a dry magnetic separator (DMS) for biotite in fine aggregates.

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Coagulation and capture of fine particles in the coupling …

Pollution problem of fine particles has aroused an increasing attention since it not only causes environmental deterioration, but also seriously influences human health [1].Fine particles have a large specific surface area, which can carry lots of toxic substance, microbes and even viruses [2, 3].Traditional electrostatic precipitators existing in various production …

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Magnetization of Metal Mesh for Fine Dust Capture

This study investigated the magnetic capture of fine dust containing iron compounds using a metal mesh. Test filters were prepared by magnetizing stainless woven mesh with permanent magnetic bars. The iron content of the test dust was 8.66%, 25.24%, and 12% for fly ash from a coal-fired power plant, effluent dust from a metro subway, and particulate matter …

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Dynamic Trajectory and Capture of Fine Dust by Magnetic …

Thus, this study proposed the use of a ferrometallic wire filter to collect fine ferric dust particles. The particle trajectory around a single magnetic wire was closely investigated …

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Study on external magnetic field improving the capture of Fe …

The process of Fe-based fine particle capture by magnetic fibers in two structure arrangements (staggered/parallel) was numerically simulated based on a computational fluid …

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Magnetic particle capture in high‐gradient magnetic …

Our study advances HGMS modeling beyond traditional rod-wire matrix designs, focusing on advanced bio-processing specific designs and applications. The theory of HGMS merges the …

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Dynamic Trajectory and Capture of Fine Dust by Magnetic …

2.1. Test Mesh Filters and Experiment. The flowing trajectories of fine particles ranging in size from 0.1 μm to 0.5 μm, which are difficult to collect via filtration, were traced around a magnetized wire, as shown in Figure 1.The single-wire efficiency, η i, was defined as the ratio of the distance (Y i /Y) between the critical distance and the limiting distance for the flow through …

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Pulsating high-gradient magnetic separation of chalcopyrite …

Coarse particles (2 mm–4.75 mm) and ultrafine particles (0–0.075 mm) are difficult to be captured by the DMS, while fine particles (0.075 mm–2 mm) are easy to be captured. Numerical simulations show that the effect of a DMS on the captured morphology of biotite in fine aggregates comes from the arrangement of magnetic system structure.

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Review Modeling of particle capture in high gradient magnetic …

The size of materials that can be disposed of by HGMS ranges from several nanometers to hundreds of microns. Forces acting on individual particle include magnetic force, gravitational force, fluid drag force, van der waals force, electrostatic force, magnetic dipole attraction force [[29], [30], [31]].It will be remarkably complex if all forces are considered in the …

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Comparative magnetic capture characteristics of revolving …

In recent years, centrifugal high gradient magnetic separation (CHGMS) was proposed for separating fine weakly magnetic ores, and it was proved effective for hematite and ilmenite [[1], [2], [3]]pared with the conventional HGMS methods available, a dynamic rotating matrix was used in the CHGMS process [4, 5].The rotating matrix stirs slurry and …

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Luzheng CHEN | Professor | Professor | Kunming University …

High gradient magnetic separation (HGMS) in centrifugal field, termed a Centrifugal High Gradient Magnetic Separation (CHGMS), has been developed to concentrate fine weakly magnetic particles such ...

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Developing high gradient magnetic separators for greener …

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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Combined clarification and affinity capture using magnetic …

Magnetic separation has been used for many years in the mining and wastewater industries. 23, 24, 25 The concept of magnetic separation applied to the bioprocessing industry involves the use of magnetic chromatography resin that can be used for capture and elution of biotherapeutics directly from the upstream feed. For magnetic processes to be exploited by the …

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Separating efficiency of ferromagnetic particles and …

Generally, materials can be divided into ferromagnetism, paramagnetism, and diamagnetism according to their magnetic properties. Among them, diamagnetic particles cannot be recycled by magnetic fields, ferromagnetic particles can be recycled by low-intensity magnetic fields, and paramagnetic particles need to be recycled by high-intensity magnetic fields [10].

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Simulation of dynamic magnetic particle capture and accumulation …

A new approach for modeling high gradient magnetic separation (HGMS)-type systems during the time-dependent capture and accumulation of magnetic particles by a ferromagnetic wire was developed. This new approach assumes the fluid (slurry) viscosity, comprised of water and magnetic particles, is a function of the magnetic particle concentration …

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