Coal pyrite microwave magnetic strengthening and electromagnetic

Microwave energy was used to strengthen the magnetic properties of coal pyrite, leading to high-gradient magnetic separation. In the X axis, demagnetizing field and background magnetic field of particles with different sizes interact near magnetic particles, producing a low magnetic field in the internal region of particles.

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Using microwave pretreatment to improve the high-gradient magnetic …

Further, the magnetic properties of pyrite in coal are enhanced after heat treatment, which is conducive to the development of magnetic separation technology [24]. Hence, microwave pretreatment of pulverized coal can stimulate the rapid pyrolysis of the pyrite in the coal and transform it into pyrrhotite and troilite to enhance the magnetic ...

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Insight into the photothermal boosted ofloxacin removal by magnetic …

Insight into the photothermal boosted ofloxacin removal by magnetic CuFe 2 O 4 /pyrite waste catalyst: Mechanism, degradation pathways, and toxicity evaluation. ... CuFe/PW could be adequately separated from the solution matrix by an external magnet within 1 min and had excellent magnetic separation feasibility. This improved the recovery ...

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Pyrite magnetic separation

Pyrite magnetic separation Magnex A process for removing mineral matter from coal by first rendering it magnetic. The coal is treated with iron carbonyl vapor, which deposits a thin skin of magnetic material on the pyrite and other mineral matter, but not on the coal. Conventional magnetic separation is then used. Developed by Hazen Research in …

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Recovery of iron from pyrite cinder by suspension …

Pyrite cinder (PyC) is an iron-enriched tailing.Suspension magnetization roasting(SMR) technology can convert hematite into magnetite, the magnetic properties of the product have been improved, and then through the magnetic separation to complete the separation of magnetite and gangue.

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Recovery of iron from pyrite cinder by suspension …

Request PDF | On Nov 1, 2023, Wenbo Li and others published Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization and mechanism ...

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Recovery of Iron from Pyrite Cinder Containing Non-ferrous …

This study presents a new technique that uses high-temperature chloridizing -reduction-magnetic separation to recover iron from pyrite cinder containing non …

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Preparation of Metallic Iron Powder from Pyrite Cinder by

The reduction and magnetic separation procedure of pyrite cinder in the presence of a borax additive was performed for the preparation of reduced powder. The effects of borax dosage, reduction temperature, reduction time and grinding fineness were investigated. The results show that when pyrite cinder briquettes with 5% borax were …

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The magnetic separation of mineral slurries by a cryogenic magnet …

With simple mixtures of magnetic chromite and non- magnetic silica sands the separation process can be studied and optimized, but to indicate some of the complexities of real mineral processing technology we discuss below some initial work on the separation of pyrite, which is magnetic, from two samples of high ash coal from …

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Characterising the effect of microwave radiation on the magnetic

The effect of microwave radiation on the magnetic properties of pyrite was investigated. The microwave source was a conventional multimodal reactor, with a frequency of 2.45. GHz and a maximum power of 1900 W.. After treatment at 1900 W for 120 s, the recovery of pyrite in the magnetic fraction after separation increased from …

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Recovery of Cu, Co, and Fe from Pyrite Cinder Based on …

Pyrite cinder (PyC) containing polymetallics is difficult to use due to the low grade of metals and complex mineral phase composition, the low reutilized rate of which causes the wastage of resources. In this paper, a novel approach based on mineral phase reconstruction was proposed to recover Cu, Co, and Fe from PyC. A feasible reduction …

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Method for separating pyrite from pyrrhotite

The invention provides a method for separating pyrite from pyrrhotite, which comprises the following steps: carrying out magnetic separation on the symbiotic ore materials of the pyrite and the pyrrhotite to obtain magnetic separation concentrate and magnetic separation tailings; mixing the magnetic separation tailings with FeCl 3 Mixing and …

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Magnetic Separation of Pyrite

The study reported below concerns the magnetic separation of pyrite from coal. Previous Studies of Magnetic Separation of Pyrite from Coals Published Work. …

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Magnetic separation – Knowledge and References – Taylor …

Magnetic separation is a process of extracting magnetically susceptible material from a mixture using a magnetic force. It is a common unit process used in the mining industry to remove highly magnetic invaluable minerals or to concentrate paramagnetic rare earth minerals. ... It is possible to separate coal from pyrite using magnetic methods ...

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Iron removal from kaolinitic coal gangue via magnetic separation …

Herein, calcination in a mild oxidizing atmosphere was implemented to enhance the magnetic properties of pyrite for subsequent magnetic separation. The sample was calcined at 300–1000 °C for 30–180 min, and the maximum magnetic susceptibility reached approximately 17 times that of the original ore. The iron recovery …

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Desulfurization mechanism of high-sulfur coal by heating …

Magnetic separation desulfurization technology is a new physical desulfurization technology before combustion. It has the characteristics of low energy consumption, simple treatment equipment, and a slight loss of heat value of coal. ... There are two possible reasons: first, when the temperature is higher than 600 °C, magnetic …

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The effect of heat treatment on the magnetic properties of …

The results of the magnetic separation of the pyrite samples are shown in Fig. 3.Initially the recovery in the magnetic fraction is very low, approximately 20% and remains so until 200 °C.Once the treatment temperature was 400 °C, the magnetic …

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Magnetic properties of chalcopyrite and arsenopyrite for …

Pulsating high-gradient magnetic separation (PHGMS) is an environment-friendly and economic method for concentrating or removing weakly magnetic minerals from materials, and its separation for sulfide minerals with similar floatability such as chalcopyrite-molybdenite (Chen et al., 2021b) and chalcopyrite-talc (Xian et al., 2022) …

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Electromagnetic separation is used in the concentration of:

Electromagnetic separation is the method to concentrate the ore or to remove unwanted materials like sand and clay from the ore. Magnetic or electromagnetic separation is the technique based on differences in magnetic properties of the ore or gangue. The particles that are attracted with the magnetic field are separated out.

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Is Pyrite Magnetic? (+ Answers To Other Common Pyrite Questions)

No, pyrite is not magnetic. This is confusing to many at first, because they know that pyrite is an iron sulfide. And iron is magnetic. In this article we'll explain why it is that pyrite is not magnetic, and also answer some of your other pyrite related questions. Why Is Pyrite Magentic? (Or Not?) Understanding the Components of Pyrite

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Preparation and recovery of iron carbide from pyrite cinder …

of iron from pyrite cinder in magnetic separation, beca use the sa turat ion magn etiza tion of F e 3 O 4 (92e mu/g) is m uch lower than that of Fe 3 C (150emu/g). When the temperature is in the ...

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Separating Pyrite & Blende Magnetism

Separation of Magnetic Blende from Pyrite . At The Yak Mill, Leadville, Colorado, International separators are employed to separate magnetic blende. The ores treated at this mill carry blende, pyrite and …

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Effect of microwave heating on magnetic separation of pyrite

DOI: 10.1016/S0927-7757(03)00362-5 Corpus ID: 98122297; Effect of microwave heating on magnetic separation of pyrite @article{Uslu2003EffectOM, title={Effect of microwave heating on magnetic separation of pyrite}, author={Tuncay Uslu and {"U}.

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CN202951540U

The utility model provides a pyrite cinder grinding magnetic separation production line which successively comprises a vibrating feeder, a section of ball grinder, a grading machine, a one-level magnetic separators, a high frequency sieve, a magnetic reuniting sorting machine and a three-level magnetic separator, wherein the vibrating feeder is …

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Effect of microwave heating on magnetic separation of pyrite

The first application of the magnetic separation process on industrial minerals is to remove iron containing compounds and minerals such as hematite …

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Recovery of valuable elements from pyrite pyrolysis slag using magnetic …

A green process is proposed for comprehensive utilization of pyrite concentrate. • The impurities in the pyrolysis slag are removed by magnetic separation-flotation.. Pb and Zn in pyrolysis slag decreased from 0.78% and 0.36% to 0.14% and 0.10%.. The first-grade product of pyrite cinder can be obtained by the process.

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Effect of microwave treatment on the flotation and …

on the removal of pyrite from coal by magnetic separation (Zavitsanos, 1978; Rowson, 1986,Hayashietal., 1990; Rowson and Rice, 1990) and on modification of magnetic properties of siderite ore (Znamen WhatsApp: +86 18221755073

Recovery of iron from pyrite cinder by suspension …

@article{Li2023RecoveryOI, title={Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization …

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Recycling of iron from red mud by magnetic separation after co-roasting

A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, …

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Iron Removal from Low-Grade Pyrophyllite Ore by …

Owing to its unique properties, pyrophyllite is an economical alternative to many minerals in different applications. The presence of iron-bearing minerals in Saudi pyrophyllite hampers its industrial uses. The aim of this study was to examine the removal of iron from Saudi low-grade pyrophyllite ore using two approaches. The first approach …

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Recovery of iron from waste slag of pyrite processing using …

After the further treatment with chlorinated segregation–magnetic separation, the iron content in the recovered slag can reach 83%. After the treatment, sulphur content in the concentrate was reduced significantly and gangue materials, such as SiO 2, Al 2 O 3 and TiO 2, were reduced effectively.

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Iron removal from kaolinitic coal gangue via magnetic separation …

Herein, calcination in a mild oxidizing atmosphere was implemented to enhance the magnetic properties of pyrite for subsequent magnetic separation. The sample was calcined at 300–1000 °C for 30–180 min, and the maximum magnetic susceptibility reached approximately 17 times that of the original ore.

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