Abstract:By pure minerals flotation test, the determination of surface Zeta potential and adsorption quantity, examines the different dosage of collector, pH and sodium sulfide as well as the different ammonium salt (amine) effects on chalcopyrite flotation behavior. The results show that sodium sulphide inhibits the chalcopyrite by blocking the adsorption of the xanthate on the surface of the chalcopyrite. Six kinds of inorganic ammonium salts are used in low doses to eliminate the inhibitory effect of sodium sulphide. Chalcopyrite surface agent adsorption test show that ammonium chloride and ethylenediamine phosphate can partly eliminate sodium sulphide weakened the influence of xanthate adsorption on the surface of chalcopyrite, improve chalcopyrite flotability.