Author： Azgomi F. Gomez C.O. Finch J.A.
Publisher： Maney Publishing
ISSN： 0008-4433
Source： Canadian Metallurgical Quarterly, Vol.46, Iss.3, 2007-09, pp. : 237-242
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Abstract
A way to characterize (classify) frothers using gas hold-up as a surrogate for bubble size was explored. Nine surfactants with a range in chemical structures were selected and tested in a bubble column instrumented to measure gas hold-up and superficial gas velocity. A correlation between frother type and gas hold-up was observed: for alcohols, gas hold-up increases with hydrocarbon chain length and the effect is the same whether the chain is branched or straight; for polyglycols, gas hold-up increased with the number of propoxy groups. The ranking by gas hold-up gave the same result as other, more complex frother characterization techniques.
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