Author/Authors
E. Matiolo، نويسنده , , Morris E. and Testa، نويسنده , , F. and Yianatos، نويسنده , , J. and Rubio، نويسنده , , J.، نويسنده ,
DocumentNumber
3268182
Title Of Article
On the gas dispersion measurements in the collection zone of flotation columns
شماره ركورد
9995
Latin Abstract
This work shows the results of gas dispersion parameters in a fully controlled laboratory column flotation cell, namely gas hold-up (εg), superficial gas velocity (Jg) and bubble size distribution, measured directly by image analyses using the LTM-BSizer. Gas hold-up and bubble size (and their distribution) were found to be strongly dependent on Dowfroth 250 concentration and superficial gas velocity. A fairly linear relationship between experimental εg and bubble superficial area flux (Sb) was established, and results are compared to those calculated using drift flux analysis. Data obtained are discussed in terms of solution, hydrodynamics and interfacial phenomena. Possible implications on the role of the frother in the energy dissipation in bubble generation and on interfacial tensions are explored.
From Page
78
NaturalLanguageKeyword
Gas hold-up , column flotation , Bubble size , Bubble superficial area flux
JournalTitle
Studia Iranica
To Page
83
To Page
83
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