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The purpose of this study is to design polyacrylic acid-modified magnetite particles that can form irreversible aggregation over a magnetic field of 0.40 T. We investigated the dispersion aggregation behavior of the prepared particles and examined the possibility of blood vessel blockage by calculating the aggregation process.
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Magnetite is a mineral whose primary component is an iron oxide that contains equal amounts of iron (II) and iron (III). Its empirical formula is Fe 3 O 4, and it is often expressed as iron (II,III) oxide. In the past, it has been called ferrous–ferric oxide and triiron tetraoxide. Magnetite is found in igneous, metamorphic, and sedimentary ...
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Below, let's take you to learn about each chromite ore processing process. 1. Gravity Separation. From the point of production practice, the gravity separation is still the main chrome ...
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The use of magnetite-based iron ore fines by means of fluidized bed technology has become a promising route to produce direct reduced iron. The significant influence of a prior oxidation treatment, which occurs in the preheating stage, on the subsequent fluidization and reduction behavior was observed in our previous study. As a …
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Thirdly, magnetic fields can freely penetrate biological tissue, and therefore magnetoreceptive systems could be located in any tissue in an animal's body, literally from head to toe For those investigators exploring the magnetite-based hypothesis, this fact makes finding 20 nm-sized crystals a very challenging task . Fourthly, the field has ...
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Magnetization roasting followed by magnetic separation is considered an effective method for recovering iron minerals. As hematite and magnetite are the main concomitant constituents in iron ores, the separation index after the magnetization roasting will be more optimized than with only hematite. In this research, the mechanism of the …
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In this article, we present a simulation study to assess the effect of particle size on the magnetic properties of magnetic fluids which contain the magnetite ( Fe 3 O 4 ) …
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In our previous studies, we investigated the performance of a novel pneumatic planar magnetic separator (PMS) for the dry beneficiation of a selected magnetite ore. In the present study, we have extended the studies on the PMS with the focus on investigating how various PMS processing flowsheet configurations influence its …
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Commonly available oxides of iron, especially magnetite (Fe 3 O 4) and maghemite (γ-Fe 2 O 3), have been studied for a long time because of their beneficial magnetic properties [1,2,3].Iron oxide …
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In our previous studies, we demonstrated the performance of novel superfine crusher and pneumatic planar magnetic separator as energy-efficient technologies for dry processing of magnetite ores. The present study investigates the economic and socio-environmental benefits of applying these technologies in conceptual dry magnetite ore …
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1.1 This guide 2 covers techniques for both dry and wet magnetic particle testing, a nondestructive method for detecting cracks and other discontinuities at or near the surface in ferromagnetic materials. Magnetic particle testing may be applied to raw material, semifinished material (billets, blooms, castings, and forgings), finished material ...
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Introduction Magnetite (Fe 2+ Fe 2 3+ O 4), a magnetic mineral found in both geological and biomineralization contexts, has magnetic and biocompatible properties that allow for a wide range of applications. 1–3 While there are many ways to synthesize magnetite, producing it with control over crystal habit, shape, and size usually requires high …
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Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II,III) oxide, Fe2+Fe3+2O4 .It also as the name magnetic minerals to attracted to a magnet. It is the most …
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Intriguingly, electron microscopy experiments in the RS-1 strain of Desulfovibrio magneticus have suggested that amorphous iron phosphate containing granules, which rapidly …
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Magnetite has been particularly investigated due to its readily availability, versatility, biocompatibility, biodegradability, and special magnetic properties. As the …
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Magnetite (Fe3O4) nanoparticles (NPs) are attractive nanomaterials in the field of material science, chemistry, and physics because of their valuable properties, such as soft ferromagnetism, half-metallicity, and biocompatibility. Various structures of Fe3O4 NPs with different sizes, geometries, and nanoarchitectures have been synthesized, and …
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Catalysts play a critical role in producing most industrial chemicals and are essential to environmental remediation. Under the demands of sustainable development, environment protection, and cost-related factors, it has been suggested that catalysts are sufficiently separable and conveniently recyclable in the catalysis process. Magnetite …
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2. Structure and Properties of Magnetite. Magnetite, Fe 3 O 4, an iron oxide, has an inverse spinel structure (Figure 1).The details of its structure were first established in 1915 by W.H. Bragg [], who provided one of the first mineral structures determined using the X-ray diffraction method.Magnetite has a cubic unit cell with a lattice constant of a = …
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Here we show by cryogenic transmission electron microscopy that the nucleation and growth of magnetite—a magnetic iron oxide with numerous bio- and nanotechnological applications7—proceed ...
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The aim of this study is to examine the performance of wet drum magnetic separation on the recovery of magnetite from dry crushed feed. The steel industry has depended on iron (Fe) concentrate ...
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To enrich the strongly magnetic component of the samples (magnetite), the field induction in the mineral separation zone must be in the range of 0.1–0.2 T. ... In the microwave roasting process, the redn. could be achieved in a considerably shorter time as compared to the conventional roasting, and the formation of undesired non-magnetic …
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The magnetic separation tailings of saprolite laterite ore containing magnesium processed by roasting and magnetic separation are used as raw materials, and the product of magnesium oxide was obtained by the process of sulfuric acid leaching, removing iron, precipitating magnesium and roasting. The effects of sulfuric acid …
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This review aims to present the main properties, applications, and synthesis methods of magnetite, together with the newest advancements in this field. Keywords: Conventional …
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Some iron oxides are stable and carry a magnetic remanence down to 660 km. Magnetite is ubiquitous in upper mantle xenoliths. New spectral methods show that some magnetic sources lie within the ...
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Dry permanent magnetic separators have been widely used in the mineral and coal processing industries due to their simple operation and high separation efficiency. These tools not only discard some amount of bulk gangue from the raw ore, thereby reducing the volume of the grinding operation and cutting energy consumption, but also …
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Iron oxide magnetic nanoparticles (MNPs), such as magnetite (Fe 3 O 4) and its oxidized form maghemite (γ-Fe 2 O 3), emerged as promising nanotheranostic agents due to their versatile magnetic properties, their biocompatibility, and their biodegradability [].Consequently, MNPs have made their way into different applications in …
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The base of this Stöber process, regarding the magnetic nanoparticles modification, is the formation of a silica layer of variable width from the chemical reaction of tetraesters of silicic acid (tetraalkyl silicates) with certain solutions. ... The use of a functionalizing agent on the magnetite nanoparticle surface is a common practice to ...
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Iron can be extracted from two types of iron ores: Magnetite and hematite. Magnetite is composed of iron in the form of Fe 3 O 4. Hematite is a mineral that contains iron in the form of Fe 2 O 3. The primary distinction between magnetite and hematite is that magnetite is ferromagnetic and hematite is paramagnetic.
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The current practice of assessing the efficiency of recovery of magnetite and ferrosilicon by drum magnetic separators is to conduct Davis tube tests at a magnetic induction equal to that on the ...
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As a result of dry magnetic separation at about 750 Gauss magnetic field conducted with -0.212+0.106 mm size fraction under optimum conditions, a magnetite concentrate assaying 54.41% Fe was ...
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