Quantitative Evaluation of Frother Blend Interaction and Its Effect on Coal Flotation

Pani, Santosh and Dey, Shobhana and Singh, Ratnakar (2013) Quantitative Evaluation of Frother Blend Interaction and Its Effect on Coal Flotation. In: Proceedings of the XIII International Seminar on Mineral Processing Technology (MPT-2013), 10-12 December, 2013, IMMT, Bhubaneswar.

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In this investigation the weak and powerful frothers, like methyl isobutyl carbinol (MIBC) and polyethylene glycol-600 (PEG) were used for studying the surface tension of frother blends at various concentrations. The critical micelle concentrations (CMC) were determined using surface tension values at different concentrations. PEG requires very low concentration (100 ppm) to attain the CMC, whereas for MIBC, about ten times more concentration (1000 ppm) is required.The interactions between the different types of frother molecules at different blends were studied through different thermodynamic properties. A more negative value of interaction parameter (â)and heat of adsorption are found at 90:10 ratio of frother blend. Flotation studies of coal fines were studied with above two types of frothers and their blend. It is found that recovery of carbon value increases significantly when a 10% (w/w) of powerful frother was added with MIBC. The recovery of carbon at 90:10 ratio of frother blend is 77.6% at 18% ash.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprint.nmlindia.org/6808
Uncontrolled Keywords:Surface tension; surface excess; heat of adsorption; critical micelle concentration; coalflotation; frother blend.
Divisions:Mineral Processing
ID Code:6808
Deposited By:Dr. Shobhana Dey
Deposited On:08 Jan 2014 10:24
Last Modified:15 Jan 2014 13:27
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