Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of −74 μm Coal Fines
Xiangning Bu, Xuexia Wang, Shaoqi Zhou, Biao Li, Hanhui Zhan, Guangyuan Xie
Abstract
and SI values indicated that carrier flotation significantly improved the flotation rate constant of combustible materials and flotation separation selectivity of ultrafine coal (-74 μm). In addition, measurements of average bubble size and water recovery indicated that both the coalescence of bubbles and the drainage of liquid in the froth were promoted when coarse coal particles (contact angle >90°) were employed as the carrier to assist the flotation recovery of ultrafine particles, which in turn favored the inhibition effect of the entrainment of gangue materials in carrier flotation compared to conventional flotation.
Topics & Concepts
Froth flotationCoalescence (physics)BubbleGangueChemistryMineralogySelectivityMaterials scienceChromatographyAnalytical Chemistry (journal)MetallurgyMechanicsPhysicsCatalysisBiochemistryAstrobiologyMinerals Flotation and Separation TechniquesMetallurgical Processes and ThermodynamicsFluid Dynamics and Mixing