RT Journal Article ID 1edd384a75f8b7a5 A1 Fahad, Musliyar Kurungattil A1 Prakash, Ritesh A1 Majumder, Subrata Kumar A1 Ghosh, Pallab T1 FRICTIONAL PRESSURE DROP IN A FLOTATION COLUMN: AN EXPERIMENTAL INVESTIGATION IN CONTINUOUS MODE AND ITS PREDICTION BY A GENERAL MODEL JF Multiphase Science and Technology JO MST YR 2019 FD 2019-09-03 VO 31 IS 3 SP 235 OP 254 K1 flotation K1 frictional pressure drop K1 slurry K1 surfactant K1 three-phase system K1 two-phase system AB The present work investigates the frictional pressure drop characteristics of a three-phase system in a countercurrent flotation column. The effects of particle size, slurry concentration, superficial gas velocity, superficial slurry velocity, and surfactant type (i.e., cationic, anionic, and non-ionic) on frictional pressure are investigated. The frictional pressure drop decreases with increasing superficial gas velocity. However, it increases with increasing slurry concentration and superficial slurry velocity. The increase in particle size leads to an increase in the frictional pressure drop. It is deduced that larger bubbles are responsible for higher circulation velocity, which in turn increases slurry momentum. The addition of surfactant to the three-phase system creates smaller bubbles, which do not cause much circulation of slurry and tend to reduce the frictional pressure drop. Correlations are developed considering the operating, dynamic, and geometric variables for estimating the frictional pressure drop in two- and three-phase systems. The developed correlations have less than ± 20% error. The present analysis will be useful for process intensification of flotation in the industries. PB Begell House LK https://www.dl.begellhouse.com/journals/5af8c23d50e0a883,40cce1e91a75afec,1edd384a75f8b7a5.html