Abstract
The flotation ability and surface properties of reagents from the class of ethoxylated esters of phosphoric acids (Phosphol-6) and fatty acids (sodium oleate) in the process of apatite recovery from apatite-nepheline ores have been studied. Using a mixture of surfactant Phosphol-6 - sodium oleate at a mass ratio of 7:3 and a concentration of 60 mg/l allows achieving maximum recovery of P2O5 in the foam product. The improvement of flotation performance is associated with the occurrence of a specific interaction between two molecules of anionic surfactants, whose strength and energy were evaluated using a thermodynamic approach based on the theory of regular solutions.
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