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COHERENCE OF SPREADING RATE OF XANTHATE RESIDUES ON WATER SURFACE WITH FLOTATION PARAMETERS

In the work collecting possibility of xanthate derivative forms being active to boundary “gas-liquid” is studied. Influence of continuance of colloid aging, represented with products of non-stoichiometric interaction of butyl xanthates with metal salts, on spreading rate on water surface is considered. It is shown that increasing of aging time of xanthate derivative forms has caused to reduction of its spreading rate on water surface. Statement about reduction of removing rate of liquid from the layer with increasing of aging time of xanthate derivative forms on mineral particle is made based on proposal that main kinetic limitation to forming of flotation complex is water layer located between the mineral particle and gas bubble. Flotation experiments to study influence of continuance of colloid aging “xanthate of metal – ion of xanthate” on parameters of flotation beneficiation are carried out. It is experimentally proved that increasing of aging of the colloid used as flotation reagent reduces its collecting possibility. Therefore, correlation of spreading rate of collector derivative forms with parameters of flotation beneficiation is established.