Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/930333

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Title
Dependency of liquid overflow rate upon humidity of a pneumatic foam
Author/Creator
Shaw, Ryan;  Evans, Geoffrey M.;  Stevenson, Paul
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences
Description
In this work, the liquid flowrate in an overflowing pneumatic foam is studied as a function of environmental humidity. It is found that in general, liquid flowrate is greater when the relative humidity of the air above the foam is high. This observation is attributed to bubble coalescence on the surface of the foam. Because the evaporation rate is diminished when the relative humidity is high, less bubbles collapse on the surface of the foam. Because no experiments have been conducted on mineralised flotation froths, a dependency on the operation of froth flotation devices on environmental humidity cannot be directly asserted; although the effect is so important in demineralised foams that it should not be overlooked in the context of flotation. The authors know of no laboratory or plant studies of froth flotation that have controlled or measured the environmental humidity.
Relation
International Journal of Mineral Processing Vol. 97, Issue 1-4, p. 26-30
Publisher Link
http://dx.doi.org/10.1016/j.minpro.2010.07.005
Date
2010
Publisher
Elsevier
Keyword(s)
flotation;  humidity;  froth
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/930333
Identifier
ISSN:0301-7516
Reviewed
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Subject
"International Journal of Mineral Processing"
 
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