##tihuan2##The magnetic separation selectivity is determined by the relative magnitudes of competing and magnetic forces acting on the particles, and these are influenced by the developed process itself and its operating settings. ... Klimpel, R.R., Hansen, R.D., 1989. Pyrite depressants useful in the separation of pyrite from coal. …
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##tihuan2##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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##tihuan2##Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization and mechanism study. Wenbo Li, …
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##tihuan2##The basic principle involved in high gradient magnetic separation (HGMS) lies in coal being diamagnetic (repulsed by a magnet) while pyrite is paramagnetic (attracted to a magnet). The mag- netic susceptibility of pyrite is 0.3 X 10-6 emu/g while this susceptibility of coal is --0.4 X 10-6 to --0.8 X 10-4 emu/g {1 emu = 1 gauss).
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##tihuan2##With the addition of 5% magnetite, which is an excellent microwave absorber mineral, microwave heating was enhanced and pyritic sulfur content of coal was reduced by 55.11%, by magnetic separation ...
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##tihuan2##Microwave irradiation can improve the reactivity of pyrite in coal, pyrolyze pyrite into high-magnetic pyrite, improve the magnetic properties, and improve the …
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##tihuan2##Dong Chen, Hongwei Guo, Jifang Xu, Yanan Lv, Zemin Xu & Haijiang Huo. 565 Accesses. 16 Citations. Explore all metrics. Abstract. This study presents a new …
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##tihuan2##DOI: 10.1080/19392699.2022.2059659 Corpus ID: 248042016; Formation of pyrite in the process of fine coal desulfurization by microwave enhanced magnetic separation @article{Zhang2022FormationOP, title={Formation of pyrite in the process of fine coal desulfurization by microwave enhanced magnetic separation}, author={Zhenxing …
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##tihuan2##Pyrite is separated from other minerals mainly by flotation. However, the hydrophilicity of pyrite is affected by many factors, causing it to easily enter the concentrate and consequently reduce the quality of concentrate. Highly efficient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby …
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##tihuan2##Request PDF | Recovery of valuable elements from pyrite pyrolysis slag using magnetic separation-flotation technique | Pyrite concentrate is a common by-product obtained after Pb and Zn sulfide ...
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##tihuan2##This work aims to categorise the mineralogical changes that occur when pyrite is heated in a muffle furnace, and relate these changes to alterations in the …
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##tihuan2##Previous studies investigated the magnetic separation coupled to pyrite heating to enhance pyrite magnetic susceptibility and remove pyrite from coal ore (e.g. Bluhm et al., 1986). While the ...
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##tihuan2##Magnetic removal of this fraction using a field strength of 1.15 Tesla resulted in the rejection of 81% of the iron. Leaching of the magnetic fraction provided significantly higher Fe recovery relative to untreated feed material and the non-magnetic fraction.
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##tihuan2##The order of magnetism in these coal products is as follows: Pyrrhotite > Troilite > pyrite. In addition, the specific magnetization of fine coal first increases and then decreases. With decreasing particle size, the specific magnetic susceptibility X 0 of fine coal decreases gradually; however, the desulfurization degree, S rej, increases ...
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##tihuan2##The collected magnetic and non-magnetic fractions obtained from the magnetic separation of Baker seam coal 2.20 SG sink fraction calcined at 400 ° C and 500 ° C.
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##tihuan2##This study presents a new technique that uses high-temperature chloridizing -reduction-magnetic separation to recover iron from pyrite cinder containing non-ferrous metals. The effects of the reduction temperature, reduction time, and chlorinating agent dosage were investigated. The optimized process parameters were …
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##tihuan2##The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by low-temperature oxygen plasma pretreatment. In this study, the plasma modification mechanism on arsenopyrite and ...
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##tihuan2##The throughput of pyrite extraction from coal using the conventional magnetic separation method can be effectively improved by increasing the magnetic …
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##tihuan2##The throughput of pyrite extraction from coal using the conventional magnetic separation method can be effectively improved by increasing the magnetic susceptibility of pyrite.
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##tihuan2##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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##tihuan2##DOI: 10.1016/j.seppur.2022.121772 Corpus ID: 250942738; Recovery of valuable elements from pyrite pyrolysis slag using magnetic separation-flotation technique @article{Liu2022RecoveryOV, title={Recovery of valuable elements from pyrite pyrolysis slag using magnetic separation-flotation technique}, author={Run-qing Liu and …
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##tihuan2##In order to reduce the content of sulfur and ash in coal, improve the desulfurization and deashing rates, a combined experiment method of microwave magnetic separation-flotation was proposed for raw coal. The desulfurization and deashing rates of three experiment methods, namely, single magnetic sep …
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##tihuan2##The microwave treated pyrite samples of −420 μm fraction were subjected to magnetic separation at magnetic field intensities of 0.1, 0.3 and 0.5 T. It was found …
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##tihuan2##Typical harmful minerals in iron ore include pyrite and apatite, which contain the harmful elements S and P. They are also weakly magnetic. ... Low-grade iron ore mined from the earth is usually composed of several minerals, desirable and undesirable. Magnetic separation means applying magnetic separators with the appropriate …
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##tihuan2##DOI: 10.1179/1879139512Y.0000000055 Corpus ID: 135586049; Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method @article{Zhang2013RecoveryOI, title={Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method}, author={G. F. …
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##tihuan2##In froth flotation separation, the first use of polysaccharides dates back to 1928 and has continued up to now [34].Although several polysaccharides have been recently synthesized and extensively used for pyrite depression in different mineral processing plants, no comprehensive review article has universally explored their …
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##tihuan2##Therefore, flotation is commonly used instead of magnetic separation to achieve the separation of pyrrhotite [15]. To date, many papers on pyrrhotite flotation have been published, giving people an in-depth understanding of the flotation behavior of pyrrhotite. ... The most used collectors for the flotation separation of pyrite and …
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##tihuan2##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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##tihuan2##Journal Article: Magnetic separation of pyrite from coals.[Review of previous studies of magnetic separation of pyrites from coal]
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