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EFFECT OF FROTHER (MIBC) ADDITION ON THE CHARACTERISTICS OF MICROBUBBLES GENERATED BY AIR DISSOLVED NUCLEATION

Published online by Cambridge University Press:  24 February 2012

Estrella Martínez-Ramos ,
Roberto Pérez-Garibay  and
Jorge Rubio-Rojas
Estrella Martínez-Ramos
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Carr. Saltillo-Monterrey km 13, Ramos Arizpe, Coah. México
Roberto Pérez-Garibay
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Carr. Saltillo-Monterrey km 13, Ramos Arizpe, Coah. México
Jorge Rubio-Rojas
Affiliation:
Universidad Federal do Rio Grande do Sul, Porto Alegre, Brasil
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Abstract

An identification of the characteristics of microbbubles dispersion is presented in this paper, when frother addition (MIBC) is modified in a biphasic system (air-water). Sauter diameter (d32), gas flow rate (Jg), superficial area flow density of the microbubbles (Sb) and air holdup (εg) are the measured variables in this research work. The studied frother additions were 0, 10 and 20 ppm. Similar to conventional bubble sizes, it was observed also, that air holdup increases with the air flow rate. The linear relationship between εg and Sb permits to conclude that superficial area flow density, a variable difficult to measure directly, may be estimated if air gas holdup is known. Furthermore, the experimental results showed that frother addition (MIBC) reduced the Sauter diameter, increasing all other variables.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1380 , 2012 , imrc2011-1380-s21-full016
Copyright
Copyright © Materials Research Society 2012

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References

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