Abstract
ABSTRACTThe collector consumption for anthracite coal flotation is higher than that of coking coal. In the present study, dodecane and nonyl benzene were evaluated for anthracite flotation. The surface free energy and interfacial interaction energy were calculated to identify the interaction mechanism between coal and dodecane/nonyl benzene from the perspective of thermodynamics. The results showed that anthracite coal was rich in benzene ring groups, and flotation performance of anthracite coal using nonyl benzene was better than that of using dodecane. The interfacial interaction free energy between anthracite coal and nonyl benzene was much higher than that of dodecane. Nonyl benzene interacts with aromatic sites on the coal surface through Pi-bonding, resulting in a high flotation recovery.
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