The effect of EDTA on the adsorption efficiency of xanthate KEX on pyrite

L. Salmi, Z. Nedjar

Abstract


Abstract: In flotation process of the mineral recovery operation, the adsorption of Xanthate (KEX)(potassium ethyl xanthate) on copper activated pyrite, is affected by oxides,and hydroxides present on the surface of mineral sulfide. In order to increase the adsorption efficiency of Xanthate (KEX) on pyrite, a complexing agent EDTA (ethylene diamine tetra acetic) was used. FTIR, SEM, X-Rays diffraction and EDAX technics were used to investigate the effect of EDTA (10-1 M). The experimental work was carried out in a pH value of 5.5, Xanthate (KEX) concentration of 10-1 M and the pyrite sample was activated with CuSO4, 10-3 M. The tests was realized with EDTA and without EDTA, the comparison between the results indicated that EDTA helped in extracting oxides an hydroxides from the mineral surface hence improving the efficiency of adsorption. 

Full Text:

PDF

References


Khoso, S.A.; Hu, Yue-hua.; Liu, Run-qing.; Tian, Meng-jie.; Sun, Wei.; Gao, Ya.; Han, Hai-sheng.; Gao, Zhi-yong. Selective depression of pyrite with a novel functionally modified biopolymer in a Cu−Fe flotation system [J]. Minerals Engineering, 135(2019) 55−63.

Gaudin, A.M. Flottation Mc, Graw-Hill., New York, N.Y. 2nd ed(1957) 310,

Finkelstein, N.P.; Allison, S.A.; In M.C, Fuerstenau (Editor), The chemistry of activation, deactivation and depression in the flotation of zinc sulphide. AIME, New York, N.Y., A.M. Gaudin Memorial Volume (1976) 414-457.

Wills, B.A. An introduction to the practical aspects of ore treatment and mineral recovery. Mineral processing Technology, pergamon Press, 2nd Ed (1981) 324.

Bag, B.; Das, B.; Mishra, B.K. Geometrical optimization of xanthate collectors with copper ions and theirresponse to flotation. Miner. Eng. 24(2011) 760–765.

Fu, P.H.; Ewen, S.; Senior, D.G. Spectroscopic characterization of ethyl xanthate oxidation products and analysis by ion interaction chromatography. Anal. Chem. 72(2000) 4836–4845.

Rao, S.R.; Finch, J.A. Base metal oxide flotation using long chain xanthates. Miner. Process. 69 (2003) 251–258.

Finkelstein, N.P.; Poling, G.W. The role of dithionates in flotation of sulfide minerals. Miner. Sci. Eng. 9(1977) 177-197,.

Woods, R.; In: Somasundaran, P.; Moudgil, B.; (Editors), Flotation of Sulfide Minerals Reagents in Mineral Technology. Marcel Dekker, New York, NY, (1988) 39-77.

Ekmekçi, Z.; Bradshaw, D.; Harris.; P.J, Aslan, A.; Hassoy, H. Sixth International Symposium on Electrochemistry in Mineral and Metal Processing, Paris, France (2003).

Xia.openg, Niu.; Jianhua, Chen.; Yuqiong, Li .; Liuyin, Xia.; Li, Li.; Heyun, Sun.; Renman, Ruan. Correlation of surface oxidation with xanthate adsorption and pyrite flotation. Applied Surface Science, 49(2019).

Monte, M.B.M.; Dutra, A.J.B .; Albuquerque,C.R.F.; Tondo, Jr.L.A.; Lins, F.F. The influence of the oxidation state of pyrite and arsenopyrite on the flotation of an auriferous sulphide ore. Miner.Eng.15(2002) 1113–1120.

Fornasiero, D.; Fullston, D.; Li, C.; Ralston, J. Rejection of arsenic minerals in sulfide flotation .Int.J.Miner. Process.61(2001) 109–119.

Peng, Y.; Zhao,S. The effect of surface oxidation of copper sulfide minerals on clayslime Coatingin flotation. Miner.Eng. 24(2011) 1687–1693.

Jacques, S.; Greet, C.J.; Bastin, D. Oxidative weathering of acopper sulphide ore and its influence on pulp chemistry and flotation. Miner.Eng. 99 (2016) 52–59.

Yin, W .; Xue, J .; Li, D.; Sun, Q.; Yao, J .; Huang, S. Flottation of heavily oxidized pyrite in presence of fine digeniteparticles. Miner.Eng. 115(2018) 142–149.

Xianghuai, w.; Eric, forssberg, EDTA-Induced Flotation of Sulfide Minerals. Journal of Colloid and Interface Science, 140(1990) .

Clarke, P.; Forsenario, D.; Ralston, J.; Smart, R. St. study of the removal of oxidation products from sulphide mineral surfaces Minerals Engineering, 11(1995).1347-1357.

Rao, S.R.; Leja, J. Surface Chemistry of Froth Flotation.KluwerAcademic/Plenum Publishers,New York. (2004).

Shannon, L. K.; Trahar, W. J. in «Advances in Mineral Processing" (P.Somasundaran, Ed.) (1986) 408-425.

Kant, C.; Rao, S.R.; Finch, J.A. Distribution of surface metal ions among the products of chalcopyrite flotation. Miner.Eng. 7(1994) 905–916.

Rumball, J.A.; Richmond, G.D. Measurement of oxidation in a base metal flotation circuit by selective leaching with EDTA. Int.J.Miner.Process. 48(1996)1–20.

Greet, C.; Smart, R.S.C. Diagnostic leaching of galena and its oxidation products with EDTA. Min.Eng.15(2002) 515–522..

Plousnina, I. « Spectres infrarouges des minéraux » ; Moscou . (1977) 175.

Nedjar, Z.; Barkat, D. Synthesis and Structural Characterization of Xanthate (KEX) in Sight of Their Utilization in the Process of Sulphides Flotation. Journal of Minerals & Materials Characterization & Engineering, 8(2009) 469-477.

Zard, S. Z, Angew. on the trial of xanthate some new chemistry of an old fu,ctional group Chem;Int.Ed;Engl, 36(1997) 672-685.

Nedjar, Z.; Barkat, D. The study of sulfides mineral flotation with xanthates, Control parameters of flotation. Online Journal of Science and Technology, 32 (2011).

Leppinen, J.O.; Basilio, C.I.; Yoon, R.H. In-situ FTIR studies of ethyl xanthate adsorption on sulphide minerals under conditions of controlled potential. Int. J. Miner. Process.26(1989) 259-274.

Mielczarski, J.; in situ ATR-IR spectroscopic study of xanthate adsorption on marcasite. Colloids Surfaces, 17(1986) 235-248.

Poling, G.W. Infrared spectroscopy of xanthate compounds in the solid, solution and the adsorbed state, M.Sc. thesis, University of Alberta, Edmonton, Canada, 1961.

Leppinen, J.O.; Basilio, C.I.; Yoon, R.H. In: Proc. 2nd Int. Symp. On Electrochemistry in Mineral and Metal Processing, P.E. Richardson and R. Woods (Editors), Atlanta, Georgia. The Electrochemical Society, Pennington, NJ, (1988) 49-65..

Prestidge, C.A.; Ralston, J.; Smart, R.STC. The competitive adsorption of cyanide and ethyl xanthate on pyrite and pyrrhotite surfaces. Int. J. Miner. Process. 38(1993) 205-233.

Buckley, A.N.; Woods, R.; Wouterlood, H.J. An XPS Investigation of the surface Sphalerites under flotation related condition. International journal of mineral processing 26(1988) 29-49.

Prestidge, C.A.; Thiel, AG.; Ralston, J.; Smart, RSTC. the interaction of ethyl xanthates with copper (II) activated Zinc sulphide. Colloids Surf A 85(1994) 51-68,


Refbacks

  • There are currently no refbacks.