Preliminary examination of electrochemical and spectroscopic features of trithiocarbonate collectors for sulfide mineral flotation
(1.Department of Metallurgical Engineering,University of Utah, Salt Lake City, Utah 84102, USA2.Department of Materials Science and Metallurgical Engineering, University of Pretoria, Pretoria 0002, South, Africa)
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