Column parameters: Their effect on entrainment in froth

Attachment of solid particles to air bubbles in surfactant-free aqueous solutions

“…However, this mechanism is not applicable to bubble-particle attachment in surfactant-free aqueous solutions in a Hallimond otation tube containing just a small quantity of hydrophilic particles and one or a few bubbles (Drzymala, 1999). Decades of research on otation have produced numerous publications which have mainly focused on particle -bubble attachment, detachment and drainage in column froths, as well as the e ect of particle surface properties on particle-bubble attachment (van Deventer et al, 2001;Finch and Dobby, 1990;Falutsu and Dobby, 1992;Tuteja et al, 1995). To the authors' best knowledge, there has been no literature describing the e ect of air bubble properties on particle-bubble attachment, although most researchers accept that the air bubble plays a very important role in this phenomenon.…”

Correlation of the entrainment factor with frother types and their mixtures in the column flotation

“…have been parameters. Many of these parameters have been studied by many researchers [1,5,6,[27][28][29][30][31][32][33][34][35][36][37][38].…”

“…The results have shown that MIBC improved the recovery and grade of celestite concentrate and entrainment factor was obtained as the lowest for MIBC frother (celestite grade and recovery, 89.95%, 87.11%, entrainment factor (Pi: 0.365)) and 4 minute is determined as optimum residence time since the lowest entrainment factor has provided. Kirjaveinen [1] model was used for the determination of specific entrainment factor of hydrophilic particle in both studies [30,31]. Unlike the course of the study in Kursun 2017 [40], within paper presents results obtained in investigating the effect of frother mixtures (Pine Oil+MIBC, Pine Oil+Aerofroth 88, MIBC+Aerofroth 88) concentrations (ratio 1:1) on the entrainment factor.…”

“…The results have shown that MIBC improved the recovery and grade of celestite concentrate and entrainment factor was obtained as the lowest for MIBC frother (celestite grade and recovery, 89.95%, 87.11%, entrainment factor (Pi: 0.365)) and 4 minute is determined as optimum residence time since the lowest entrainment factor has provided. Kirjaveinen [1] model was used for the determination of specific entrainment factor of hydrophilic particle in both studies [30,31].…”