Exploration on the mechanism of oily-bubble flotation of long-flame coal

•The isoelectric points of oily bubbles and coal particles were observed at about pH 3.5 and 2.3 respectively.•Over the range of pH 2–11, the attachment was verified by the induction time and oily-bubble flotation tests.•The combustible matter recovery in flotation was inversely related to the induc...

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Veröffentlicht in:	Fuel (Guildford) 2018-03, Vol.216, p.427-435
Hauptverfasser:	Chen, Songjiang, Tang, Longfei, Tao, Xiuxiang, He, Huan, Yang, Zhao, Chen, Liang
Format:	Artikel
Sprache:	eng
Schlagworte:	Attachment Bubbles Coal Coal mining Deviation Exploration Extended DLVO theory Flotation Hydrophobicity Induction time Interaction energy Isoelectric points Long-flame coal Mineralization Oily-bubble flotation Particulates pH effects Predictions Recovery XPS
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