Modelling Gas Holdup in Flotation Column Froths

Autor:	Jyeshtharaj B. Joshi, Manish R. Bhole
Rok vydání:	2008
Předmět:	Steady state Chemistry Fluidized bed General Chemical Engineering Bubble Gas holdup Energy balance Thermodynamics Fluidization Ergun equation Pressure gradient
Zdroj:	The Canadian Journal of Chemical Engineering. 85:369-373
ISSN:	1939-019X 0008-4034
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e96d633f3a223397d1bec2ed34d1ab83 https://doi.org/10.1002/cjce.5450850312 Zobrazit plný text záznamu Plný text