Abstract
The utilization of a new collector 1-Dodecyl-3-methylimidazolium bromine (DMB) ionic liquid in the reverse flotation of feldspar from apatite was researched through a series of experiments. The micro-flotation results exhibited that DMB had a good collecting for feldspar while it had little floatability for apatite, and the artificial mixed minerals flotation presented the reverse flotation separation of feldspar from apatite can be realized well by adding the DMB collector. The foam collapse results illustrated that DMB has better foam properties for reverse flotation compared to dodecylamine (DDA). The zeta potential and Fourier Transform Infrared Spectroscopy (FT-IR) measurements indicated that the interaction of DMB with the feldspar surface was much stronger than that of DMB with the apatite surface. The XPS analysis further suggested that the interaction between DMB and apatite surface was weak while that between DMB and feldspar surface was hydrogen-bonding adsorption. As such, this work is expected to provide a meaningful guide for the selection/design of a cationic collector in reverse flotation of feldspar from apatite.
Published Version
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