High iron bauxite ore is a typical unmanageable polyparagenetic resource and owns high comprehensive utilization value. Separation of iron from fine particles of high iron bauxite ore by the process of metallized reduction and magnetic dressing was researched systemically. The effect of magnetic field intensity, reduction temperature, reduction time, mole ratio of …
Playing a great role in human physiologies and pathologies, carbonyl metabolites are intimately associated with a variety of diseases, though the effective analysis method of them remains a challenge. A hydrazide-terminated polyurea-modified magnetic particle (HPMP) with versatile probes is develope …
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 ...
The subsequent continuous surface modification of the pristine magnetite particles is difficult to date, especially if more than one chemical reaction is necessary. A batch preparation of kilogram of surface-modified ion-exchange magnetic particles for laboratory scale and pilot line purification experiments were realized.
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.
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.
High gradient magnetic separation (HGMS) achieves effective separation to fine weakly magnetic minerals using numerous small magnetic wires in matrix, and its separation performance is inherently dependent on the …
Magnetic particles are an important class of micro-/nanomaterials that display magnetic properties when subjected to external magnetic fields. This interesting feature has resulted in their widespread use in research and clinical diagnostics. To date, different compositions of magnetic particles, including iron oxide, nickel, and cobalt, have been successfully fabricated …
The applications of magnetic particles can be classified into four categories depending on the aim of the technology. Imaging and in vitro diagnostics are mature areas that have clinical relevance, while research into magnetic particles to treat disease or affect controlled motion of larger organelles, cells and biomaterials is at the pre-clinical stage.
This study investigated the magnetic capture of fine dust containing iron compounds using a metal mesh. Test filters ... designed for the separation of magnetic particles (Rincon, 1991; Hristove, 2007; Wang et al., 2008). However, the use of external power to form a magnetic field in these studies
High gradient magnetic separation technology is a green production technology that has an unparalleled superiority in separating fine and weak magnetic particles. As the …
The magnetic collection of fine paramagnetic particles requires a high intensity high gradient magnetic field. The most effective method of separation has proven to be Wet …
In this work, the highly selectivity capture mechanisms of magnetic wires rotating in uniform and alternating magnetic fields were comparatively described, including their magnetic field distributions and the magnetic forces required for the capture of the wires to magnetic particles. The capture mechanism was experimentally verified with a ...
Semantic Scholar extracted view of "Dynamic capture and accumulation of multiple types of magnetic particles based on fully coupled multiphysics model in multiwire matrix for high-gradient magnetic separation" by Feiwang Wang et al. ... Study on capture radius and efficiency of fine weakly magnetic minerals in high gradient magnetic field ...
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 …
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 …
When the effect of magnetic force on the suspended particles is higher than drag force, particle capturing is achieved by the rods [13] and the filtration occurs in the channel.
Abstract We develop an effective medium model describing the capture of ultra-fine magnetic particles (diameter much less than 1 µm) by an assemblage of parallel magnetic cylinders, randomly distributed in static fluid. The continuity equation describing the dynamics of concentration is solved numerically to obtain the concentration in various regions around the …
Luzheng Chen received his doctoral degree from Harbin Institute of Technology in 2008 and joined Kunming University of Science and Technology. He mainly focusses on 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 ...
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 …
Recent developments in high intensity magnetic separation has improved the magnetic collection of fine particles. Magnetic field strengths up to 50,000 gauss have been produced in pilot scale separators using superconducting technology.
High-gradient magnetic separation (HGMS) effectively separates fine weakly magnetic minerals using a magnetic matrix. The basic principle of single-wire capture of magnetic particles in HGMS has received considerable attention. In practice, however, a real matrix is made of numerous magnetic wires.
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
Magnetic separation, as a powerful technique for the manipulation of magnetic particles, has attracted worldwide attentions and achieved tremendous applications in the past …
The aims of the symposium were to discuss fundamental and practical aspects of the technology for the production of fine inorganic particles for the metals, industrial minerals and advanced ceramics sectors, to highlight particle characterization methods and developments, and to review major advances in the processing and extractive metallurgy ...
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 ...
A hydrazide-terminated polyurea-modified magnetic particle (HPMP) with versatile probes is developed to address this issue. The capture ability of HPMPs for carbonyl metabolite is more than 1200 µmol g −1, which is increased by 4 orders of magnitude via the introduction of polyurea. With a broad linear range of over 4 orders of magnitude ...
Download: Download high-res image (267KB) Download: Download full-size image Microplastic separation and degradation via magnetic nanomaterials are quite promising strategies. This review elucidates the up-to-date strategies of microplastic separation and degradation via various magnetic nanostructures, the adsorption interaction between …
Theoretically, magnetic particles would be captured onto the wire due to the action of magnetic capture force, while non-magnetic particles would flow through the wire. However, in practice, some ...
In this work, the magnetic capture of independent magnetic particles on a cylindrical magnetic element in the pulsating HGMS process was theoretically described, based on which the size matching ...
In the CHGMS process, the slurry follows the rotation of matrix and produces a hydrodynamic force onto particles, which is one of the most competitive forces against the capture of matrix to magnetic particles. Such a capture model in the rotating slurry is different from that of static matrix in a vertically flowing slurry as widely used in ...
The matrix is the agglomeration carrier of magnetic mineral particles in high-gradient magnetic separation (HGMS). Its structural parameters have a great influence on the distribution of the ...
Magnetic separation technology is a physical separation method that uses the differences in magnetism between matter to separate them from each other by different motion behaviors in a non-uniform magnetic field. It is highly efficient, green, and environmentally friendly, with little change in the physical and chemical properties of raw materials. Magnetic …
In the simplest case, the biopolymer solution is mixed with magnetic particles and, after bulk gel formation, the magnetic gel formed is broken into fine particles. Alternatively, the biopolymer solution containing dispersed magnetite is dropped into a mixed hardening solution or a water-in-oil suspension technique is used to prepare spherical ...
