Abstract
On the ground of the flotation theory requirements to composition of a collector layer adsorbed at the surface of minerals under flotation and depressing, the regularities of the effect exerted by intra-molecular and inter-molecular interactions on physicochemical properties of collectors, the selectivity conditions of the relationship between the functional group of a collector and crystal lattice elements of a mineral, as well as the demands for physical sorption form of collectors, the article couches and validates design principles for selective collecting agents.