High-Efficiency Nanobubble Coal Flotation
The high efficiency of a froth flotation process is limited to a narrow particle size range. Nanobubbles integrated into a specially designed flotation column expanded the particle size range for effective froth flotation as a result of increased probabilities of particle-bubble collision and attachment and reduced probability of detachment. Results show that combustible recovery of a -150 µm coal sample increased by 5%-50% in the presence of nanobubbles. Nanobubble also increased the kinetic flotation rate constant by more than 40%. Other major advantages of the nanobubble flotation process include lower collector dosage since nanobubbles are produced selectively on hydrophobic particle surface. © 2013 Copyright Taylor and Francis Group, LLC.
A. Sayed-Ahmed and D. Tao, "High-Efficiency Nanobubble Coal Flotation," International Journal of Coal Preparation and Utilization, Taylor & Francis, Jan 2013.
The definitive version is available at http://dx.doi.org/10.1080/19392699.2013.810623
Mining and Nuclear Engineering
Keywords and Phrases
Cavitation; Coal; Froth Flotation; Nanobubble
Article - Journal
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