The research objective is to study the effect of the water-air emulsion size of the foaming agent solution on the flotation ability of non-ferrous metal minerals. An air-water emulsion of a foaming agent solution was obtained in a water-air microemulsion generator. It has been established that the supply of microbubbles to the monomineral flotation process makes it possible to increase the yield of minerals with different dispersion ability and accelerate the flotation process by 10 - 15 %.