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magnetic concentration article about magnetic concentration

Magnetic Concentration | Article about Magnetic ...

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Magnetic Concentration a method for separating minerals from waste rock and undesirable impurities. The method is based on the action of a magnetic field on mineral particles with various levels of magnetic susceptibility. The first magnetic ...

The magnetic concentration gradient force—Is it real ...

2007-2-9 · The energy of a permanent magnetic moment m subject to a constant magnetic field H is U = −μ 0 m·H, where μ 0 is the permeability of free space. When a solution of susceptibility χ is subject to the magnetic field, a magnetization M = χ H is induced. Magnetization is the magnetic moment per unit volume. Hence, the energy density E mag, of an electrolyte in the presence of a magnetic ...

A long-lasting concentration cell based on a magnetic ...

2014-9-28 · A concentration cell that produces voltages of ~0.5 V for 100 hours can be created by tethering redox-active molecules to magnetic nanoparticles and then using

Characterisation and magnetic concentration of an iron

2019-1-1 · After magnetic concentration, the mass and Fe recovery are greater than 40 wt% and 64 wt%, respectively, for a magnetic field of 5465 Gauss. An increase of 20 wt% in Fe and decrease of 35 wt% in SiO 2 is seen in the obtained concentrates when compared with the magnetic concentration feed, which is deemed satisfactory for rougher operation.

Magnetic microparticle concentration and collection using ...

2021-2-18 · Magnetic ratcheting cytometry is a promising approach to separate magnetically-labeled cells and magnetic particles based on the quantity of magnetic material. We have previously reported on the ability of this technique to separate magnetically-labeled cells. Here, with a new chip design, containing high aspect ratio permalloy micropillar arrays, we demonstrate the ability of this technique ...

Magnetic Concentration of Quartz Sand for Glass Industry ...

The authors consider the production experience of a separator of the new generation with constant magnets based on Nd – Fe – B, which was designed by ÉMKO Company for producing quartz glass concentrates of grades OVS-030 and OVS-025, using dry magnetic separation. The proposed separator has several advantages compared to electromagnetic separators of the EVS series, which have the

Magnetic field properties caused by stress concentration ...

Measurements of the effects of tensile stress on magnetic field properties, infrared thermography and acoustic emission of a cuboid sample with an elliptical hole in its center were presented. The tensile stress was applied perpendicularly to the sample by electro-tension machine according to a step-loading curve. The changes of the sample temperature was recorded by an infrared thermography ...

Influence of the aggregation, concentration, and viscosity ...

2015-3-6 · It is well known that IONP concentration and aggregation play an important role in determining their magnetic response (Martinez-Boubeta et al. 2012; Etheridge et al. 2014).Firstly, the study of the influence of IONP concentration on their heat dissipation allows probing magnetic dipolar interactions among individual or aggregated nanoparticles.

Quantitative study of metal magnetic memory signal

2010-9-1 · Recently, a novel magnetic testing method, called metal magnetic memory (MMM) technique, firstly proposed by Russian experts , , , has been proved to be effective in characterizing the early damage of ferromagnets, especially the micro-damage due to local stress concentration , , , , .The fundamental difference of this technique from traditional ones is that what to be measured in MMM ...

On the concentration dependence of Faraday rotation in ...

Abstract: Faraday rotation and magnetization measurements at room temperature were undertaken on Fe/sub 3/O/sub 4/ particle magnetic fluids with different concentrations. The results show that Faraday rotation follows a Langevin-type behavior with the applied magnetic field. The results also show that Faraday rotation increases with the concentration of the sample and tends to saturate at ...

Dilution Concentration Effects on Magnetic Properties of ...

2021-5-5 · The paper discusses the dilution concentration effect on the magnetic properties of the three nano-Heusler Ru2MnX (X = Nb, Ta, V) compounds using the Blume–Capel Ising model. The studied nano-Heusler compounds are composed of a mixed atom spins. In this work, we use Monte Carlo simulations under the Metropolis algorithm. The diluted effects on the magnetic properties of the three

Particle size distribution, concentration, and magnetic ...

Particle size distribution, concentration, and magnetic attraction affect transport of polymer-modified Fe(0) nanoparticles in sand columns Environ Sci Technol. 2009 Jul 1;43(13):5079-85. doi: 10.1021/es900171v. Authors Tanapon ...

Magnetic microparticle concentration and collection using ...

2021-2-18 · Magnetic ratcheting cytometry is a promising approach to separate magnetically-labeled cells and magnetic particles based on the quantity of magnetic material. We have previously reported on the ability of this technique to separate magnetically-labeled cells. Here, with a new chip design, containing high aspect ratio permalloy micropillar arrays, we demonstrate the ability of this technique ...

Magnetic Concentration of Quartz Sand for Glass Industry ...

The authors consider the production experience of a separator of the new generation with constant magnets based on Nd – Fe – B, which was designed by ÉMKO Company for producing quartz glass concentrates of grades OVS-030 and OVS-025, using dry magnetic separation. The proposed separator has several advantages compared to electromagnetic separators of the EVS series, which have the

Influence of magnetic field alignment and defect ...

2015-12-24 · NV-polarizations of defects aligned with their bond axis parallel with magnetic field were measured for eight Type 1b HPHT diamonds with varying NV- and P1 (substitutional nitrogen) concentrations. Polarization was found to decrease with increasing NV-concentration as well as increasing P1 concentration, as seen in figure 4 , but did not trend ...

Concentration Dependent MPI Tracer Performance ...

2016-1-25 · Magnetic Particle Imaging (MPI) and Magnetic Particle Spectroscopy (MPS) usually require a reference sample measurement to provide information about the non-linear dynamic magnetic behavior of a specific magnetic nanoparticle (MNP) type. This reference sample based approach presupposes that this dynamic magnetization behavior of MNP is concentration independent.

(PDF) Magnetic signals of stress concentration detected in ...

The abnormal magnetic changes are positively correlated to the magnitude of the load and the stress concentration factor. The abnormal magnetic peak and magnetic gradient are effective in ...

Role of Ce concentration on the structural and magnetic ...

The magnetic oxide particles with Ce concentration x = 0.4 showed a better crystallite size, dodecahedral site occupancy and solubility of cerium in the garnet phase. The morphological visualization of random shaped grains in the micrometer range was performed using

Simulation of Magnetic Field Abnormalities Caused by ...

2012-8-31 · Abstract: Stress concentration is a major cause of metal structure failures. In ferromagnetic materials, it changes the nearby magnetic field. This phenomenon has been used to test stress concentrations. However, magnetic field changes caused by stress concentrations are complicated; therefore obtaining detailed stress information from magnetic fields or even evaluating the impact of

Magnetic microparticle concentration and collection using ...

2021-2-18 · Magnetic ratcheting cytometry is a promising approach to separate magnetically-labeled cells and magnetic particles based on the quantity of magnetic material. We have previously reported on the ability of this technique to separate magnetically-labeled cells. Here, with a new chip design, containing high aspect ratio permalloy micropillar arrays, we demonstrate the ability of this technique ...

Magnetic Concentration Phase Transitions in Ultrathin ...

Modeling study of magnetic and concentration phase transition in ultrathin films of diluted magnet has been carried out under approximation of random interaction between atomic magnetic moments of nearest neighbors and within the framework of Ising model. The dependence of Curie temperature on concentration of magnetic atoms was formed. It is shown that with increasing of thickness of ...

Particle size distribution, concentration, and magnetic ...

Particle size distribution, concentration, and magnetic attraction affect transport of polymer-modified Fe(0) nanoparticles in sand columns Environ Sci Technol. 2009 Jul 1;43(13):5079-85. doi: 10.1021/es900171v. Authors Tanapon ...

Variations in the Concentration of Magnetic Minerals and ...

The Citarum River has a volcanic catchment area in West Java Province, and is one of the nationally strategic rivers in tropical Indonesia due to its roles in water supply and in power generation. The river is economically important, but it is also polluted by

Concentration Dependent MPI Tracer Performance ...

2016-1-25 · Magnetic Particle Imaging (MPI) and Magnetic Particle Spectroscopy (MPS) usually require a reference sample measurement to provide information about the non-linear dynamic magnetic behavior of a specific magnetic nanoparticle (MNP) type. This reference sample based approach presupposes that this dynamic magnetization behavior of MNP is concentration independent.

Simulation research on magneto-acoustic concentration ...

Background: Magnetic nanoparticles (MNPs) have been proposed as drug carriers for targeted therapy. Noninvasive imaging methods that can compute the distribution of MNPs have also attracted much attention. Method: Based on the Langevin theory, the theoretical relationship between the magnetic force and the concentration of MNPs was derived.

A new feature of magnetic memory signal for quantitative ...

Magnetic memory detection technology is a new nondestructive testing technology developed in recent 20 years, which can detect the stress concentration of ferromagnetic materials. At present, the quantification of stress concentration in magnetic memory testing is always a difficult problem. In the quantitative research of magnetic memory detection, the key is to extract the effective ...

On the concentration dependence of Faraday rotation in ...

Abstract: Faraday rotation and magnetization measurements at room temperature were undertaken on Fe/sub 3/O/sub 4/ particle magnetic fluids with different concentrations. The results show that Faraday rotation follows a Langevin-type behavior with the applied magnetic field. The results also show that Faraday rotation increases with the concentration of the sample and tends to saturate at ...

Simulation of Magnetic Field Abnormalities Caused by ...

2012-8-31 · Abstract: Stress concentration is a major cause of metal structure failures. In ferromagnetic materials, it changes the nearby magnetic field. This phenomenon has been used to test stress concentrations. However, magnetic field changes caused by stress concentrations are complicated; therefore obtaining detailed stress information from magnetic fields or even evaluating the impact of

Influence of magnetic field alignment and defect ...

2015-12-24 · NV-polarizations of defects aligned with their bond axis parallel with magnetic field were measured for eight Type 1b HPHT diamonds with varying NV- and P1 (substitutional nitrogen) concentrations. Polarization was found to decrease with increasing NV-concentration as well as increasing P1 concentration, as seen in figure 4 , but did not trend ...