Adsorption of tannin-bearing organic reagents on stibnite, arsenopyrite and chalcopyrite in complex gold ore flotation

Abstract

The authors report studies into adsorption of tannin and cow-parsnip extract components on stibnite, arsenopyrite and chalcopyrite using UV spectroscopy, scanning laser microscopy and measurement of air bubble detachment from a mineral particle. It is found that tannin and organic reagents are selectively adsorbed on the surface of the listed sulfide minerals and exert selective effect on adsorption of sulfhydryl collecting agent, which, in its turn, may result in efficient recovery of the minerals in proper concentrates under complex gold ore flotation.