Abstract
Flotation collector α-Bromolauric acid (α-BLA) was used to separate fluorapatite (FAp) from hematite. Flotation performance was presented by pure mineral and mixed binary minerals flotation experiments. The adsorption mechanism of α-BLA on FAp surface was investigated by zeta-potential, FT-IR spectra, and XPS measurements. Flotation results showed that the α-BLA reduced the phosphorous grade of the concentrate to 0.25% and achieved the iron recovery of 91.67% at 19 °C. The mechanism research revealed that the anion of α-BLA interacted with calcium ion of the FAp surface by chemisorption making the FAp mineral float up despite the existence of cornstarch.
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