Modelling gas holdup in flotation column froths

Bhole, Manish R. ; Joshi, Jyeshtharaj B. (2007) Modelling gas holdup in flotation column froths The Canadian Journal of Chemical Engineering, 85 (3). pp. 369-373. ISSN 0008-4034

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A one-dimensional steady-state model is developed for the prediction of axial variation of the gas holdup in flotation column froths. Froth is considered as an inverse fluidized bed of bubbles and hence the frictional pressure gradient is obtained based on the energy balance. Pressure gradient can also be obtained from the Ergun equation with adjustable constants. The model correctly captures the effect of superficial gas velocity, superficial liquid velocity and bubble diameter on the variation of the gas holdup along the froth height. The predictions of the model are in agreement with the experimental data from the literature.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Froth; Gas Holdup; Flotation Column; Frictional Pressure Gradient
ID Code:61115
Deposited On:13 Sep 2011 11:10
Last Modified:13 Sep 2011 11:10

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