On the production of iron ore superconcentrates by high-intensity …
Estimated total capital and operating costs to produce a ton of superconcentrate by high-intensity wet magnetic separation are $0.43 for retreatment of specular hematite spiral concentrate, $0.47 for Brazilian hematite fines, …
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Separation of Iron and Rare Earths from Low‐Intensity …
magnetic separation preconcentration technology of Yannup-ing rare earth ore, demonstrating that the grade of rare earth concentrate can be enhanced from 1.52 % to 7.40 %. Conse-quently, it is a challenge to separate hematite and rare earth minerals using high-intensity magnetic separation due to their similar weak magnetic properties. In …
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Magnetic separation of hematite and limonite fines as …
Introduction. In a magnetic separation system, the force on a particle toward increasing field intensity (F) is expressed by (Svoboda, 1987) F∝V(S p −S o)H d H d l, where V is the volume of the particle; S p and S o are the magnetic susceptibility of the particle and surrounding media, respectively; H is the magnetic field intensity; and …
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Enhanced iron recovery from magnetic separation of …
The combined process of low/high-intensity magnetic separation (L/HIMS) ... Effect of carboxymethyl starch on fine-grained hematite recovery by high-intensity magnetic separation: experimental investigation and theoretical analysis. Powder Technol., 343 (2019), pp. 270-278.
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Study on Polymer-Bridging Flocculation Performance of …
The experimental results show that the recovery of fine hematite is improved in the presence of CMS in the high-intensity magnetic separation (HIMS) with sufficient kinetic energy input and ...
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Effect of carboxymethyl starch on fine-grained …
The experimental results show that the recovery of fine hematite is improved in the presence of CMS in the high-intensity magnetic separation (HIMS) with …
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Study on polymer-bridging flocculation performance of …
In this study, the effect of molecular structure and dosage of the reagents, pulp pH and stirring intensity on the flocculation performance and magnetic separation behavior of ultrafine specular hematite ore were studied by optical microscope observations along with image analysis and floc-magnetic separation experiments, respectively.
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Influence of process parameters of dry high intensity magnetic
DOI: 10.1016/J.MINPRO.2017.01.007 Corpus ID: 102466541; Influence of process parameters of dry high intensity magnetic separators on separation of hematite @article{Tripathy2017InfluenceOP, title={Influence of process parameters of dry high intensity magnetic separators on separation of hematite}, author={Sunil Kumar …
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Influence of process parameters of dry high intensity …
Tripathy et al. (2017b) used a rare earth roll magnetic separator (RERMS) and a dry induced-roll high-intensity magnetic separator (IRMS) to separate …
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A novel pneumatic dry high-intensity magnetic …
A novel pneumatic dry high-intensity magnetic separator (PDHIMS) was developed. •. PDHIMS achieves highly selective separation of hematite particles fine to …
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International Journal of Engineering
Because of the high iron content in the tailings, a wet magnetic separator is used. According to the results, the proposed medium-intensity separator and the associated …
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Maximizing haematite recovery within a fine and wide …
Wet high-intensity magnetic separation (WHIMS) bench-scale test work was conducted on a haematite-rich material with a particle size of -200 µm What made this material different was that it contained a 60% -10 µm fraction, hence discarding the -10 µm material was not an option. The objective of the test work was to determine how to maximize ...
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Influence of matrix type on WHIMS performance in the magnetic
Magnetic separation of hematite using high intensity dry magnetic separation has been reported by Palasvirta (1959). He presented data for a coarse-grained specular hematite ore from Quebec ground to all passing 1.7 mm. Metallurgical results were exceptionally good, with concentrate grades as high as 67% Fe and iron …
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A novel pneumatic dry high-intensity magnetic separator …
This study focuses on the development of a novel pneumatic dry high-intensity magnetic separator (PDHIMS) (maximum magnetic induction of 2 T) to enhance the efficiency of separating hematite ore fines. Force analysis of the novel separator demonstrated that it can potentially reduce the lower size limit of hematite dry …
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Wet High Intensity Magnetic Separation
The hematite in this ore occurs in the form of specularite, which is more easily beneficiated than the red or dull black hematite typical of oxidized taconites. ... Wet High-Intensity Magnetic Separation Results. Tests were conducted on a bulk sample of oxidized taconite from the western Mesabi Range. The sample represents ½ to 1 billion …
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(PDF) Dry High-Intensity Magnetic Separation In Mineral …
The wet high intensity magnetic separation of magnesite ore waste stocked in an open pit of a magnesite mine was investigated in this paper. ... Effect of particle size on performance of IRMS while concentrating hematite fines (at magnetic field intensity of 1.4 T and feed rate of 0.5 tph) (Tripathy et al. 2017) Ac ce pt ed M an us cr ip t ...
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WET HIGH INTENSITY MAGNETIC SEPARATOR (WHIMS)
Optimized magnetic system design, optimal arrangement and combination of magnetic matrix, background field intensity up to 1.8T. vertical rotation, reverse flushing achieve magnetic matrix is not easy to block; Pulsation mechanism design could improve the separation efficiency;
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Influence of process parameters of dry high intensity …
These are the three main process parameters which results in the selectivity of the paramagnetic minerals in dry high intensity induced roll magnetic separation. Most of the paramagnetic minerals including hematite respond to the magnetic separation at …
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Processing of Lean Iron Ores by Dry High Intensity Magnetic Separation
Abstract. Dry high intensity magnetic separation (DHIMS) is investigated to process a lean hematite ore. It was found that the feed particle size and the drum rotation speed have significant influences on the separation performance, and a magnetic concentrate assaying 36.22% Fe with 75.97% recovery is achievable from the ore …
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Separation analysis of dry high intensity induced roll magnetic …
Separation of Mn oxides and Fe oxides at a top size of 4.7 mm (test #1) was not satisfactory since the magnetic flux intensity of 6000 gauss (obtained at a higher gapbetween the rotor and the ...
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Processing of Lean Iron Ores by Dry High Intensity …
Dry high intensity magnetic separation (DHIMS) is investigated to process a lean hematite ore. It was found that the feed particle size and the drum rotation speed …
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Magnetic separation of hematite and limonite fines as
The grades of Fe and SiO 2 also were similar. San et al. [30], after the hydrophobic flocculation of limonite iron ore fines (~38 wt% Fe), increased the performance of magnetic separation for a ...
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Parameter Optimization of the Separation Process …
The results of the open circuit separation test that was designed on the basis of the single-factor experiment showed that the concentrate grade of Fe in the …
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On the production of iron ore superconcentrates by high-intensity …
Pilot plant and commercial operations have shown that high-intensity wet magnetic separation is well adapted to meet this specification with high recovery and attractive capital and operating costs. ... to produce a ton of superconcentrate by high-intensity wet magnetic separation are $0.43 for retreatment of specular hematite …
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Prediction of Separation Performance of Dry High Intensity Magnetic
The iron oxide reduced from 0.69% in the head sample to 0.08% after dry high-intensity magnetic separation, and the whiteness increased from 82.01% in the head sample to 95.97% in the separated ...
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A novel pneumatic dry high-intensity magnetic separator …
1. Introduction. High-intensity magnetic separation (HIMS) as an integral part of sorting paramagnetic materials has been widely used in different areas [1, 2], such as beneficiation of minerals [3], desulfurization of coal [4], non-metal ore purification [5], waste treatment [6], and nuclear fuel reprocessing [7].Over the span of decades, a …
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Influence of process parameters of dry high intensity magnetic
The wet high intensity magnetic separation of magnesite ore waste stocked in an open pit of a magnesite mine was investigated in this paper. The received sample was subjected to physical, chemical, thermal and phase characterizations. ... Magnetic separation of hematite and limonite achieving maximum recovery with minimum rejection whereas ...
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Treatment of Low-Grade Iron Ore Using Two Stage Wet High-Intensity …
The experimental results have shown that the FMS process is effective to recover hematite and limonite fines at a middle magnetic field intensity, greatly increased the separation efficiency ...
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Processing a rare earth mineral deposit using gravity and magnetic
These magnetic properties are then exploited using a series of wet high intensity magnetic separation (WHIMS) steps in conjunction with gravity pre-concentration steps to concentrate the valuable RE minerals from a Canadian RE deposit. ... samples of several of the gangue minerals (including quartz, hematite and magnetite) …
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for high-intensity magnetic separating process …
to the high intensity magnetic separation process in a hematite concentration process, and obtained remarkable economic benefits. This paper is organised as follows. Section …
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