Study of Xanthane (KAX) Adsorption on Galena : Separation by Flotation

Abstract

The adsorption of anionic collectors (xanthate) on the surface of galena was studied using diffuse reflectance FTIR (DRIFT) and scanning electron micrograph (SEM) techniques. The effect of sulphite interaction with galena on the mechanism of potassium amyl xanthate (KAX) adsorption onto galena surfaces has been studied in situ using electrochemical potential, FTIR spectra and SEM have been used to identify the mechanism of interaction between sulphite and galena surfaces. Activated galena with copper sulfate (10-4M) has been investigated at pH 9.5 and potassium amyl xanthate (3.10-2M) concentration. Potential (Eopt (PbS) = +55mV); Adsorbed colloidal (Pb-AX, 1109-1384Cm-1) is found even at high xanthate concentration, colloidal lead oxide/hydroxide particles have been imaged after 10-4M lead sulfate addition at pH 9.5. The behaviour of this system is consistent with ion exchange between xanthate and hydroxide followed by oxidation to dixanthogen (X2, 1276Cm-1) and diffusion of this species across the surface

Keywords

• Galena, Xanthate (KAX), Adsorption, SEM, FTIR

References

1. Amira.,(1992). Project. “Interaction of iron sulfide minerals and their influence on sulfide mineral flotation”.
2. Ralston J.Smart RStC (eds.).Australia Minerals Industry Reasearch Association. Melbourne.Australia P. 260.
3. Chryssoulis. S.L., (1994). ” Mineral Surface Characterization by TOF-LIMS and TOF-SIMS”. AMTEL Report no. 21. (Univ.West. Ontario, London, Canada, P.1-15,
4. Finkelstain,, N.P., . (1997). “The activation of sulphide minerals for flotation”: a revew, Int. Min er.Process. 52, P. 81-12
5. Fuerstenau M.C., (1982). “Principles of flotation, Inst. Min. Metall”., Johannes bourg, , P.91,
6. Harris P.J., “Reagents in Mineral technology” (Eds. P. Somasundaran and B.M. moudgil). Marcel Dekker: New York. Ch 11,P.371
7. Leppinen. J., Laajalehto. K., Kartio. I., and Souninen, E., (1995). “FTIR and XPS Studies of Surface Chemistry of Pyrite in Flotation”, Int. Miner. Process. Congr. XIXth So.Min. Metal. Explor., Littleston, Vol. 3, P.35-38
8. Mielezarski.E. J.A. Mielezarski., (2003). “Int. J. Miner. Process”. P.72-129.

9. Miller.J.D,, Kellar J.J., (1999) . “Internal reflection spectroscopy for FTIR analysis of carboxylate adsorption by semi soluble salt minerals”. Advances in Flotation Technology. Society for mining, Metallurgy, and Exploration, Inc., Littleton, CO, P.45-59.
10. Nedjar.Z., (2009). “Synthesis and Structural Characterization of Xanthate (KEX) in Sight of Their Utilization in the Processe s of Sulphides Flotation”, Journal of Minerals & Materials Characterization & Engineering, Vol.8, No.6,P.469-477 .
11. Nedjar. Z, Barkat. D., (2011). “The study of sulfides mineral flotation with xanthates:control parametres of flotation”, Online Journal of Science and Technolgy , Vol 1.No2., P.32-46.
12. Nedjar.Z, Barkat.D, (2011) . “Studies of Activation of Sphalerite by Copper and Xanthate Adsorption”. International Review of Chemical Engineering. Vol.3, No.5, P.607-613.
13. Ozbayoglu, G., Atalay, U., and Senturk, B., , (1994) .“Flotation of lead and zinc carbonates ore”. Recent advances in materials and mineral resources, Penang, Malaysia.Vol.5, No.1, P.21-45.
14. Prestidje C.A., Thiel AG, Ralston J, Smart RStC, (1994). ” The interaction of ethyl xanthate with copper (II)- activated zinc sulfide: Kinetic effects”. Colloids Surf A. 85: P.51-68 .
15. Leja J., Poling, (1961). “Infred spectroscopy of xanthate compounds in the solid, solution and the adsorbed state” (M.Sc.Thesis, University of Alberta, Edmonton, Canada.
16. Poling .G.W., Fuerstenau., M.C ;Woods R. (1976).” Electrochemistry of Sulphide Flotation”, (ed. Fuerstenau M.C.), AIME, New York, 1, P. 334.