An approach to mineral particle-air bubble interaction in turbulent flow of flotation cell

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:276663

Lu, S; Song, S; Gou, J ^[1]; Pan, Y ^[2]

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1. Univ. of Science and Technology, Beijing (China). Coll. of Resource Engineering
2. Ministry of Metallurgical Industry of P.R. China, Beijing (China)

The calculated potential energies of interaction between hydrophobic particle of three minerals (rhodochrosite, quartz and talc) and air bubble show that the energy of hydrophobic interaction is the dominant factor for their attachment. An attachment rate equation, integrating particle-bubble collision and adhesion by introducing a capture efficiency, has been put forward. It was found that the hydrophobic particle-bubble aggregates can not be disconnected in the bulk zone of flotation cell, whereas in the impeller zone the breakup may occur, particularly for the coarser particles captured by bubble. Finally, the flotation rate constant was estimated theoretically and verified by experiments.

• OSTI ID: 276663
• Report Number(s): CONF-9510120-; ISBN 0-87335-141-X; TRN: IM9636%%374
• Resource Relation: Conference: 19. international mineral processing congress, San Francisco, CA (United States), 22-27 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 19. international mineral processing congress: Flotation operating practices and fundamentals. Volume 3; PB: 332 p.
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL PREPARATION
KINETICS
BUBBLES
PARTICULATES
INTERACTIONS
MINERALS
FLOTATION
KINETIC EQUATIONS
SURFACE PROPERTIES
PARTICLE SIZE
VAN DER WAALS FORCES
TURBULENT FLOW