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The adsorption of cationic and anionic collectors on the surface of smithsonite wasstudied using diffuse reflectance FTIR DRIFT and X-ray photoelectron spectroscopyXPS or ESCA techniques.The FT-IR spectra studies of smithsonite conditioned using DDA dodecylamineshow the presence of RNH2on the surface of smithsonite and accordingly the adsorptionof DDA. XPS results show the presence of a ZnS layer on the surface after sulphidising inamine adsorption. The appearance of the N 1s signal of the amine groups and S 2psignal of ZnS which increased in the intensity of the signal of C 1s peak by adsorptionof DDA on smithsonite. The presence of COO- on the surface of smithsonite after oleicacid treatment confirmed the adsorption of OA oleic acid onto the surface. The mostadsorption occurs at around pH 10, when RCOO- is predominant in solution and hasample opportunities for interaction with the mineral surface.The appearance of CS2 on the surface of smithsonite exposes the adsorption of KAXpotassium amyl xanthate onto surface. XPS results confirm the presence of ZnS layer onthe surface after sulphidising in amine adsorption and also the transferring the surface toCuS in KAX adsorption. It is suggested that copper cations exchange with those of zincduring copper activation of smithsonite such as activation of sphalerite.

KEYWORDS

Smithsonite; Anionic collector; Cationic collector; FTIR; XPS

Cite this paper

H. Hamid and F. Eric -XPS & FTIR Study of Adsorption Characteristics Using Cationic and Anionic Collectors on Smithsonite,- Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 1, 2006, pp. 21-45. doi: 10.4236-jmmce.2006.51002.





Autor: Hosseini S. Hamid, Forssberg Eric

Fuente: http://www.scirp.org/



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