Abstract:The redox potentials of xanthate/dixanthogen (dithiocarbonate/di dithiocarbonate, DTC/(DTC)₂) and trithiocarbonate/di trithiocarbonate (TTC/(TTC)₂) couples have been measured for the potassium salts. The spectroscopic characteristics of these sulfide mineral collectors were determined by FTIR and UV analysis. Electrochemically controlled contact angle measurements at a pyrite surface provided the basis to analyze the effect of the functional group (-O-CS₂ versus-S-CS₂) on the hydrophobic surface state. Results from this preliminary examination are discussed with respect to the nature of collector adsorption and the pyrite flotation response.

Key words: redox potential； trithiocarbonate collector； sulfide mineral flotation