Results 11 to 20 of about 17,317 (245)
International Journal of Mining Science and Technology, 2023 The utilization of an appropriate collector or surfactant is crucial for the beneficiation of low-rank coal. However, in previous studies, the selection of surfactants was primarily based on flotation procedures, which hinders the understanding of the ...
Fen Xu +3 more
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Energies, 2022 For various sorts of hard coal, enrichment by flotation is used for feed consisting of grains smaller than 0.5 mm. Regarding process automation, coal flotation is a multidimensional, dynamic nonlinear object of control, for which the main control signal ...
Jarosław Joostberens +2 more
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Coal desulfurization by flotation method
IOP Conference Series: Earth and Environmental Science, 2023 Abstract In general, the combustion of coal containing high sulfur and ash causes negative environmental problems such as acid rain and the emission of oxides of sulfur. Coal flotation is one of the most effective methods for desulfurizing and deashing raw coal with high ash and sulfur contents before burning coal.
S R Nurhawaisyah +3 more
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Study on Low Rank Coal Flotation Enhancement by Carboxylic Acid Collector Prepared from Gutter Oil
Kuangchan zonghe liyong, 2023 Traditional non-polar oil collectors cannot achieve high recovery of low-rank coal because of the presence ofoxygen-containing groups at coal surface.
Wenhao Sui +3 more
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Effect of ultrafine kaolinite particles on the flotation behavior of coking coal
International Journal of Coal Science & Technology, 2020 Kaolinite, as a mineral in fine coal, has an important influence on the flotation of coal particles. In this study, the effects of ultrafine kaolinite particles on the flotation recovery of coal particles were investigated.
Yijiang Li +4 more
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Записки Горного института, 2022 The article presents one of the new approaches to theoretical assessment of collecting ability of reagents. The efficiency of reagents-collectors with different chemical composition used for flotation of coking coals was studied.
Sergey A. Kondratev, Tatyana A. Khamzina
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Mechanism of action of polyacrylamide in selective flocculation flotation of fine coal
工程科学学报, 2016 The influences of anionic polyacrylamide with low molecular weight(PAM A401) on coal and kaolinite were investigated by the flocs size distribution,FTIR spectra and wettability.
ZOU Wen-jie +3 more
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Flotation performance analysis on coal washery rejects
Energy Geoscience, 2021 The coal washery rejects cause major environmental problems in various parts of the globe. Nearly 1 Mt of coal rejects discarded as waste, is accumulated per annum in India, during washing or cleaning of raw coal.
P.S. Kumar +3 more
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Experimental Study on Deashing of High Ash and Refractory Coal Slime by Classification Flotation
Kuangchan zonghe liyong, 2022 Aiming at a certain coal slime in Guizhou, the yield rate of -0.074mm class is 54.19%, the ash content is 40.55%, the yield rate of -0.045 mm class is 40.38%, the ash content is 40.79%, and contains a lot of pearl clay, Clay minerals such as kaolinite ...
Tianshen Lu +3 more
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Quantitative determination of modal content and morphological properties of coal sulphides by digital image analysis as a tool to check their flotation behaviour [PDF]
, 2003 An efficient depression of coal sulphides in the flotation process means a healthier environment and may be essential for the sustainability of a coal operation.
Alvarez +13 more
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