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high frequency magnetic concentrate in romania

Improving magnetite concentrate quality in an alternating

One of the promising methods for improving the quality of magnetite concentrate is its processing in a high-frequency alternating magnetic field, when magnetite particles are subjected to...The HgradH analysis revealed that both high magnetic intensity and high magnetic gradient were necessary for pre-concentrating the ultrafine ilmenite. (4) Innovative pre-concentration technology for recovering ultrafine

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High-frequency response of nanostructured magnetic

This paper reports a brief overview on recent developments regarding the high-frequency response in the GHz range of nanostructured magnetic materials. The concentrate Fe grade obtained using the pulse magnetic field was better than that obtained using a steady magnetic field, indicating that the presence of Improving reverse flotation of magnetite ore using pulse magnetic

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Separation mechanism and experimental investigation of

Pulsating high gradient magnetic separation (PHGMS) has been widely used for separating magnetic minerals in the past decades. In practice, magnetic field From the conclusion, as a title “high frequency magnet”, (1) a real part of high complex relative permeability, (2) an imaginary part of low complex relative High-Frequency Magnetics SpringerLink

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Broadband multi-magnon relaxometry using a quantum

This first demonstration of broadband multi-magnon NV relaxometry is a promising result for high-frequency magnetic dynamics sensing with NVs. For clarity, Nature Physics Ultrashort light pulses generate nanometre-scale wavepackets of magnons that propagate coherently and at high speed in an Coherent spin-wave transport in an antiferromagnet

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Ultra-high rate of temperature increment from

On the other hand, the frequency of AC magnetic fields for this new technique is higher than the Brezovich limit (f∙H = 4.85 × 10 8 A/m∙s) 32, which is the We demonstrated magnetometry with high frequency resolution ( ~ 50 mHz), high field precision ( ~ 10 −11), and high-field (7T) operation, yielding advantages High field magnetometry with hyperpolarized nuclear spins

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Hard magnetic ferrite with a gigantic coercivity and high frequency

Magnetic ferrites such as Fe3O4 and Fe2O3 are extensively used in a range of applications because they are inexpensive and chemically stable. Here we show that rhodium-substituted ε-Fe2O3, εThe chapter also focuses on hysteresis and eddy-current losses. There are two kinds of eddy-current effects: skin effect and proximity effect. Both of these effects cause nonuniform distribution of the current density in conductors and increase the conductor AC resistance at high frequencies. A classification of winding and core losses Fundamentals of Magnetic Devices High‐Frequency Magnetic

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Arsenopyrite removal from pyrite concentrate using pulsating high

Pulsating high gradient magnetic separation (PHGMS) was innovatively used to upgrade an unqualified pyrite concentrate with arsenic content reaching as high as 3.49%. The effects of five keyNewsweek reporter Jason Murdock writes that MIT researchers have developed a blueprint for a device that could convert high-frequency terahertz waves into usable energy. "In theory, the energy could be used to power a cell phone by soaking up the ambient T-waves and using them to help charge the device via an add-on,” writes Murdock.Energy-harvesting design aims to turn high-frequency electromagnetic

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Mining ResearchGate

268. Magnetic concentration route for recovering pellet feed fines stored in a mining dam REM, Int. Eng. J., Ouro Preto, 75(3), 267-274, jul. sep. 2022Magnetic measurements indicate that the coating of the hard magnetic phase (CoFe2O4) by Fe3O4 provides a significant enhancement of hysteresis losses over the corresponding single-phase counterpart response, and thus results in a multiplication of the magnetic hyperthermia efficiency opening a novel pathway for high-performance, magnetic Antonios Makridis Postdoctoral Researcher MagnaCharta-Magnetic

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Utilization of soft magnetic nanoparticles for ultra-high frequency

In the communication sector especially at ultra-high frequency range, a major challenge is to maintain the real permeability (μ′) and real permittivity (ε ′) with controlled electromagnetic losses.To fulfill this demand, the present work reported electromagnetic studies over the frequency range of 2–3.4 GHz for magnetic Abstract The temperature behavior of high-frequency magnetoimpedance (MI) in amorphous microwires in a glass sheath has been studied in the temperature range up to the Curie temperature TC. Two alloy samples with compositions of Co27.4Fe5B12.26Si12.26Ni43.08 (TC ≈ 48°C) and Co64.82Fe3.9B10.2Si12Cr9Mo0.08 High-Frequency Magnetic Impedance in (CoFeNi)BSi and

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Magnetic-Based Enrichment of Rare Cells from High

Cancers 2020, 12, 933 2 of 17 to their rarity [3,4]. Considering that typically only 1–10 CTCs are present in 1 mL of blood [4], the low blood volume of standard blood samples (7.5–10 mLThe invention relates to a mineral separation process for magnetic hematite rough concentrates, which comprises the following steps of: feeding the magnetic hematite rough concentrates into a closed circuit grinding system; once grading, overflowing and feeding into weak magnetism at first section; feeding the concentrates in the weak magnetism at CN102441481B Mineral separation process for magnetic

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Broadband multi-magnon relaxometry using a quantum spin sensor for high

NV centres in diamond can be used to locally sense magnetic field fluctuations at the NV frequency. Here, the authors demonstrate sensing of magnetic field noise produced by non-NV resonant magnonAt a rotation speed of matrix of 300 r/min, it achieved a high-grade magnetic concentrate assaying 60.98% Fe at 84.28% iron recovery from this fine hematite sample assaying 35.02% Fe. It was thus concluded that the CHGMS provided a potential technique for the production of high-grade magnetic concentrate from fine weakly High gradient magnetic separation in centrifugal field

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Improving magnetite concentrate quality in an alternating magnetic

An increase in the frequency of the alternating magnetic field from 80 to 200 Hz resulted in an increase in the mass fraction of iron in the concentrate from 66.6 to 68.0 % in the circuit withCancer has emerged as a serious health concern as it represents the second leading cause of death worldwide with soaring mortality rates (an estimated 9.6 million deaths in 2018) (Gonzales-Weimuller et al. 2009).More than 1.8 million new cancer cases are expected to be diagnosed in 2020 (Siegel et al. 2020).Cancer is a stage of an Review on magnetic nanoparticle-mediated hyperthermia for

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Magnetochemistry Free Full-Text Fabrication and Soft Magnetic

Soft magnetic composites (SMCs) are composed of alloy materials with the core and insulating layers as the shell. These composites exhibit high saturation magnetic sensitivity and low hysteresis loss, making them a promising material for various applications. The investigation of double layers is considered valuable as it can Magnetic Particle Imaging (MPI) is a promising new tracer modality with zero attenuation deep in tissue, high contrast and sensitivity, and an excellent safety profile. However, the spatialA High-Throughput, Arbitrary-Waveform, MPI Spectrometer and

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Magnetic Core Characteristics and Applications Technical

Some examples of applications of components with magnetic materials are showcased in Figure 1 [5]. Key references: L. Umanand, S.R. Bhat, “Design of Magnetic Components for Switched Mode Power Converters”, Wiley Eastern Limited. Marian K. Kazimierczuk, “High-Frequency Magnetic Components”, John Wiley and Sons, Ltd.A magnetic concentrate obtained of pyroxenite samples (sites 4 to 7) was reduced and divided into fractions of distinct range sizes: 26±2 μm, 19±1 μm, 13±1 μm, 9±1 μm, 6±1 μm and 6-0.1 μm. The mineralized samples of carbonatite and pyroxenite were characterized by X-ray diffraction, and high frequencyMicroscopy and rock magnetism of fine grain-size Elsevier

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Technogenic Magnetic Particles in Alkaline Dusts from Power

To determine frequency-dependent magnetic susceptibility (χ fd), additional measurements at high frequency (4,700 Hz) were carried out. Frequency-dependent magnetic susceptibility is a parameter that helps to determine the presence of superparamagnetic fraction in the tested sample, i.e., magnetic particles <0.02 μm.Discovery of advanced soft-magnetic high entropy alloy Qingdong, Q. & Wei, L. Synthesis of FeCoNiCuZn single-phase high-entropy alloy by high-frequency electromagnetic-field assisted ballAn advancement in the synthesis of unique soft magnetic CoCuFeNiZn high

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