Title

High-Efficiency Nanobubble Coal Flotation

Abstract

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.

Department(s)

Mining and Nuclear Engineering

Keywords and Phrases

Cavitation; Coal; Froth Flotation; Nanobubble

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 Taylor & Francis, All rights reserved.

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