Effects of Additives in Froth Flotation of Silicate Zinc Ore; A Study by Zeta Potential Measurement and Infrared Spectroscopy
Jutarat Pomjaturad, Chairoj Rattanakawin, Nimit Sriprang, Suwalak Tongteeka, and Torranin Chairuangs* Author for corresponding; e-mail address: chato@csloxinfo.com
Volume: Vol.34 No.2 (MAY 2007)
Research Article
DOI:
Received: 20 December 2006, Revised: -, Accepted: 20 April 2007, Published: -
Citation: Pomjaturad J., Rattanakawin C., Sriprang N., Tongteeka S. and Chairuangs T., Effects of Additives in Froth Flotation of Silicate Zinc Ore; A Study by Zeta Potential Measurement and Infrared Spectroscopy, Chiang Mai Journal of Science, 2007; 34(2): 191-200.
Abstract
Effects of sodium hexametaphosphate (NaPO3)6, sodium sulphide (Na2S) and stearyl amine (CH3(CH2)17NH2) on froth flotation of a hemimorphite zinc ore were studied by zeta potential measurement and infrared spectroscopy. The results from zeta potential measurement confirmed the roles of (NaPO3)6 as anionic dispersant, Na2S as anionic sulphidiser and pH regulator, and CH3(CH2)17NH2 as cationic collector. Indirect effects of the adsorbed anionic species from the sodium hexametaphosphate and the sodium sulphide on the symmetry of Si-O and Zn-O bonds on the ore surface were successfully detected by infrared spectroscopy. These effects resulted in a shift of νs(Si-O) and/or na(Si-O), and a shift or splitting of Zn-O stretching.