A theoretical model of flotation deinking efficiency

被引:35
作者
Bloom, F [1 ]
Heindel, TJ [1 ]
机构
[1] NO ILLINOIS UNIV, DEPT MATH SCI, DE KALB, IL 60115 USA
关键词
flotation deinking; kinetic model; probability of adhesion; probability of detachment; sliding; three-phase contact; disjoining film; critical film thickness; collision frequency; turbulent energy density;
D O I
10.1006/jcis.1997.4869
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The associated probabilities of each microprocess occurring in flotation deinking are employed in the development of a kinetic or population balance-type model of the overall flotation process. The overall model contains two kinetic constants: The first, k(1), governs the overall probability of a free ink particle successfully being intercepted by and adhering to an air bubble; the second, k(2), is a measure of the probability that a particle/bubble aggregate pair will become unstable and split to yield a ''new'' free ink particle. The solution to the kinetic model is presented in terms of k(1); and k(2), which are themselves functions of system parameters such as bubble and particle physical properties (e.g., diameter, density) and fluid properties (e.g., viscosity, surface tension). From this solution, a definition of theoretical flotation efficiency is presented, as well as definitions of other system performance parameters, and selected predictions are displayed. (C) 1997 Academic Press.
引用
收藏
页码:182 / 197
页数:16
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