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197-204_Dobbins:text. DOBBINS, M., DOMENICO, J., and DUNN, P. A discussion of magnetic separation techniques for concentrating ilmenite and chromite ores. The 6th International Heavy Minerals Conference 'Back to Basics', The Southern African Institute of Mining and Metallurgy, 2007.
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The magnetic separation technique with or without reduction roasting method was used by several researchers to upgrade the low-grade chromite ores [21][22][23][24] [25] [26]. High-intensity ...
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Magnetic separation is an effective strategy for the upgrading of a variety of lean ores, including the beneficiation of low-grade manganese ores. This work reviews 24 studies on the magnetic ...
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Increasing demand for quality iron ores has led to beneficiation of even lean-grade ores, fines, slimes, and wastes. ... Further, magnetic separation studies of low grade iron ore was carried out by using IRMS and found that a product of maximum of 51.2% Fe can be separated from the low grade ore assaying 35.9% Fe (Tripathy et al., …
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The reduced ore was then upgraded by magnetic separation, 75 per cent of the total mass being rejected as tailings, and a high grade nickel concentrate, assaying 5.1 per cent Ni and 82.66 per cent ...
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PBM type drum separators ( Fig. 1) with multipolar system made of permanent magnets are used for wet magnetic separation of highly magnetic ores and are made in three versions: with direct-flow ...
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This work reviews 24 studies on the magnetic separation of manganese ores; 6 of these studies report both a sufficiently high Mn grade (>44% Mn) and Mn/Fe ratio (>7.5) in the concentrate as to be suitable for use as high-grade feed materials in the production of ferromanganese. Of these 24 studies, the most efficient separation and …
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Magnetic separation process of ores: An electromagnetic separator is required. A leather or brass belt moves over two rollers, one of which encloses magnets in it. The powdered ore is dropped over this moving belt at one end. The non magnetic part of the ore is not attracted by the magnet and falls to form a separate heap at a distance.
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Special Issue Information. Dear Colleagues, Modern high-gradient magnetic separation was initially triggered in the early 1930s. In the recent several decades, it has become one of the key technologies in the exploration of weakly magnetic ores, such as oxide irons, ilmenite, wolframite, and manganese, and in the removal of magnetic …
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L. A. Lomovtsev, R. S. Ulubabov, and A. S. Vikul, "Improvement and expansion of the use of dry magnetic concentration for iron ores — a promising approach to making mining-concentration plants more efficient," in: V Congress of Ore Dressers in the CIS Nations, 2005. S. B. Nikolaev, N. S. Ermolaev, E. V. Akhmyatova, and L. A. Lomovtsev, …
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Extensive research has been focused on the low-temperature reduction of nickeliferous laterite ores, followed by magnetic separation to produce ferronickel.56–66 Although there are few examples of commercial applications, the low-temperature reduction of laterite ores followed by magnetic separation could provide an alternative method for ...
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The removal of iron ion from leaching solution is critical for the recovery of value metals, with the method of choice commonly being crystallization (precipitation). This paper summarized the new improvements in iron removal by precipitation methods in recent years and proposed a novel process, magnetic seeding and separation. The new …
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Flotation-magnetic (FM) separation is a newly-developed technology for the economic recovery of rare earth elements from the Dalucao ore. The FM process selectively agglomerates the rare earth particles while separating them from gangue minerals by bubble flotation. The agglomeration of fine bastnaesite particles has been observed by …
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Wolframite mineral processing method mainly in gravity separation, and includes four parts: pre-selection, gravity separation, concentration and recovery. By pre-selection and discarding the waste …
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Which of the following is concentrated by electromagnetic method –. A Haematite. B Cinnabar. C Argentite. D Galena.
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Introduction. Pulsating high gradient magnetic separation (PHGMS) is now widely applied in the world, for separation of fine weakly magnetic ores such as oxidized iron ores, ilmenite and wolframite and for purification of non-metallic ores such as quartz and feldspar, due to its high reliability, high throughput and low operational cost [1], …
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Dry magnetic separation (DMS) has low selectivity for fine magnetic ores, due to the difficult dispersion of fine particles in the separation process. To address this problem, a novel centrifugal dry magnetic separation (cDMS) method was proposed to enhance the separation efficiency for fine particles. In this investigation, the cDMS …
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The MLA test results showed that the gangue in fine-grained iron ores was more difficult to liberate than in coarse-grained iron ores. The dry magnetic separation tests indicated that only 15.23% ...
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The Froth floatation method is one of the methods to eliminate the impurities from sufide ores. The basic principle for this method is the distinct wetting properties of unwanted substance and ore. Electromagnetic separation is utilized to concentrate the ore if either gangue or ore are magnetic in nature. Hence, option D is correct. Smelting ...
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The beneficiation of two different low-grade manganese ores had been done by gravity separation and reduction-roasting process followed by the magnetic separation to improve their Mn/Fe ratio.
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Application of electromagnetic (EM) force to metal processing has been considered as an emerging technology for the production of clean metals and other advanced materials. In the current paper, the principle of EM separation was introduced and several schemes of imposing EM field, such as DC electric field with a crossed …
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Flotation-magnetic (FM) separation is a newly-developed technology for the economic recovery of rare earth elements from the Dalucao ore. The FM process selectively agglomerates the rare earth ...
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Magnetic separation is a process used to segregate magnetic materials from a mixture. Utilizing the magnetic properties of certain substances, this technique is highly effective for the concentration and purification of ores, recycling of materials, and in various laboratory applications. Principles of Magnetic Separation
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The magnetic fluid used in magnetic fluid separation is usually a strong electrolytic solution, paramagnetic solution, and ferrimagnetic colloidal suspension. It can be magnetized under the action of a magnetic field or the combination of a magnetic field and an electric field, which appears to be heavier. Heavier magnetic fluid density after ...
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The Flotation Separation of Magnesite and Limonite Using an Amine Collector. In order to reduce the iron impurities in magnesite ore and improve the purity of magnesium products, the difference in floatability between magnesite and limonite has been studied by using mixtures….
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Dai and Zhao 2008 firstly investigated the magnetic reduction roasting and magnetic separation of Fe-Mn ores from Yunnan, China. The Fe grade is increased from 27.82% for raw Fe-Mn ores to 55.50% in the magnetic concentrate with a recovery of 65.81%. After that, reverse flotation of the non-magnetic products was conducted to …
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Electromagnetic separation is employed for the concentration of those ores in which: the ore is magnetic; the gangue is magnetic; both the ore and the gangue are magnetic; either the ore or the gangue is magnetic
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A year later Edison began applying for patents for electromagnetic separation of ores, having concluded that the magnetic portion could be made "into the very best iron equal to Swedish bars at a cost which makes it far more valuable than . …
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