Analysis of flotation and aggregation characteristics of muscovite particles through the extended DLVO theory
Year: 2022
Type: article
Abstract: In this study, the flotation and aggregation characteristics of muscovite mineral particles were determined as a function of dodecyl amine hydrochloride (DAH) concentration and correlated with the theoretically calculated "particle-particle" and "particle-bubble" interactions using extended DLVO theory.In this series of tests, the flotation and aggregation characteristics of the muscovite mineral were determined with micro-flotation and turbidity measurements, respectively.In addition to these analyses, surface tension measurements were carried out as a function of pH.Also, the zeta potential and contact angle measurements were also performed as a function of DAH concentration prior to the flotation and aggregation tests.The experimental studies showed that while almost minimum and maximum points of flotation and turbidity values were obtained up to a critical concentration of DAH as 6.10 -6 mol/dm 3, a significant increment was obtained following that concentration.Accordingly, while repulsive forces dominated the interactions up to that concentration, the attractive forces became more effective at further concentrations such as 2.10 -5 , 4.10 -5 , 8.10 -5 , and 1.10 -4 mol/dm 3 DAH concentrations for both "particle-particle" and "particle-bubble" interactions.This in turn suggested that the determination of energy barrier heights between "particle-particle" and "particle bubble" may provide important insights into both flotation and aggregation characteristics of particles.
DOI: 10.37190/ppmp/151789
Language: English
Subfield: Filtration and Separation
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4283786532