MIBC adsorption at the coal/water interface

Effect of frothers and solid particles on the rate of water transfer to froth

“…This decreasing concentration of the frother with time might explain the effect of coal particles on the water transfer rates for DF-1012 frother. It is also known that frothers adsorb onto coal particles (Frangiskos et al, 1960;Fuerstaneu and Praditp, 1982;Miller et al, 1983), but there are only data for MIBC and α-terpineol.…”

Effect of Frothers on Bubble Size and Foam Stability in Potash Ore Flotation Systems

“…Frother molecules contain polar groups such as hydroxyl (-OH), carbonyl (-C=O) and ether linkages (-O-) and do not form stable bonds at mineral surfaces. They are, however, known to adsorb onto hydrophobic solids (Frangiskos et al, 1960;Fuerstenau and Pradip, 1982;Miller et al, 1983), and they can also adsorb onto collector-coated surfaces . In flotation processes in which water-insoluble collectors are utilized, frothers may facilitate emulsification of hydrocarbons in water (Meilk-Gaykazyan et al, 1967;Laskowski, 2001).…”

Effective Processing of Low-Volatile Medium Coking Coal Fines of Indian Origin Using Different Process Variables of Flotation

“…In practice, however, the interaction does occur among the frother, coal, associated mineral impurities, and the other reagents. Adsorption of different frothers on hydrophobic solids, such as coals and methylated silica, has been documented in the literature [7,8,9,10]. Results obtained indicate that the adsorption occurs through the hydrophobic interaction between the frother and the coal surface.…”