Effect of Ultrasonic Pre-Treatment and Aeration on Flotation Separation of Chalcopyrite from Pyrite

Document Type: Research Article

Authors

1 University of Kashan, Kashan, I.R. IRAN

2 Graduate University of Advanced Technology, Kerman, I.R. IRAN

Abstract

In this paper, the effect of ultrasonic pre-treatment and aeration on the flotation separation of chalcopyrite from pyrite was investigated at different amounts of potassium ethyl xanthate (KEX), as a collector, and pH values. Artificially-mixed samples of chalcopyrite and pyrite were subjected to flotation studies to understand the effect of aeration with or without ultrasonic treatment on the flotation behavior of the minerals. Results of laboratory micro-flotation tests indicated that joint aeration and ultrasonic treatment makes it possible to separate chalcopyrite from pyrite effectively. X-ray Photoelectron Spectroscopy (XPS) confirmed the existence of negligible amounts of hydroxide/oxide species, which are resulted from galvanic interactions, on the surfaces of the minerals after conditioning of the suspension by ultrasound waves. The effective separation of chalcopyrite from pyrite was attributed to desorption of metal hydroxide precipitates, as hydrophilic species, from the surface of the chalcopyrite by ultrasonic treatment.

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Main Subjects


[1] Rao M.Y., Natarajan K., Influence of Galvanic Interaction between Chalcopyrite and Some Metallic Materials on Flotation, Minerals Engineering, 1: 281-294 (1988).

[2] Ekmekçi Z., Demirel H., Effects of Galvanic Interaction on Collectorless Flotation Behaviour of Chalcopyrite and Pyrite, International Journal of Mineral Processing, 52: 31-48 (1997).

[3] Owusu C., Fornasiero D., Addai-Mensah J., Zanin M., Effect of Regrinding and Pulp Aeration on the Flotation of Chalcopyrite in Chalcopyrite/Pyrite Mixtures, Powder Technology, 267: 61-67 (2014).

[4] Chen X., Peng Y., Bradshaw D., The Separation of Chalcopyrite and Chalcocite from Pyrite in Cleaner Flotation after Regrinding, Minerals Engineering, 58: 64-72 (2014).

[5] Finkelstein N., The Activation of Sulphide Minerals for Flotation: A Review, International Journal of Mineral Processing, 52: 81-120 (1997).

[6] He S., Fornasiero D., Skinner W., Correlation between Copper-Activated Pyrite Flotation and Surface Species: Effect of Pulp Oxidation Potential, Minerals Engineering, 18: 1208-1213 (2005).

[8] Qi B., Aldrich C., Effect of Ultrasonic Treatment on Zinc Removal from Hydroxide Precipitates by Dissolved Air Flotation, Minerals Engineering, 15: 1105-1111 (2002).

[9] Ozkan S.G., Beneficiation of Magnesite Slimes with Ultrasonic Treatment, Minerals Engineering, 15: 99-101 (2002).

[10] Aldrich C., Feng D., Effect of Ultrasonic Preconditioning of Pulp on the Flotation of Sulphide Ores, Minerals Engineering, 12: 701-707 (1999).

[11] Śla̧czka A.S., Effects of an Ultrasonic Field on the Flotation Selectivity of Barite from a Barite-Fluorite-Quartz Ore, International Journal of Mineral Processing, 20: 193-210 (1987).

[12] Kang W., Xun H., Hu J., Study of the Effect of Ultrasonic Treatment on the Surface Composition and the Flotation Performance of High-Sulfur Coal, Fuel Processing Technology, 89: 1337-1344 (2008).

[13] Celik M., Effect of Ultrasonic Treatment on the Floatability of Coal and Galena, Separation Science and Technology, 24: 1159-1166 (1989).

[14] Du J., Mcloughlin R., Smart R.S.C., Improving Thickener Bed Density by Ultrasonic Treatment, International Journal of Mineral Processing, 133: 91-96 (2014).

[15] Fuerstenau M.C., Miller J.D., Kuhn M.C., "Chemistry of Flotation": AIMM, Kingsport Press, (1985).

[16] Bulatovic S. M., “Handbook of Flotation Reagents: Chemistry, Theory and Practice: Vol. 1: Flotation of Sulfide Ores”, Elsevier, (2007).

[17] Owusu C., Fornasiero D., Addai-Mensah J., Zanin M., Influence of Pulp Aeration on the Flotation of Chalcopyrite with Xanthate in Chalcopyrite/pyrite Mixtures, International Journal of Mineral Processing, 134: 50-57 (2015).

[18] Owusu C., Zanin M., Fornasiero D., Addai-Mensah J., "Influence of Pyrite Content on the Flotation of Chalcopyrite After Regrinding with Isamill", Presented at the Chemeca 2011: Engineering a Better World, Sydney Hilton Hotel, NSW, Australia, (2011).

[19] Leppinen J., FTIR and Flotation Investigation of the Adsorption of Ethyl Xanthate on Activated and Non-Activated Sulfide Minerals, International Journal of Mineral Processing, 30: 245-263 (1990).

[20] Zhang Q., Xu Z., Bozkurt V., Finch J., Pyrite Flotation in the Presence of Metal Ions and Sphalerite, International Journal of Mineral Processing, 52: 187-201 (1997).

[21] Owusu C., Addai-Mensah J., Zanin M., Correlations between Optimum Aeration and Pyrite Content in a Modelled Chalcopyrite-Pyrite Xanthate Flotation System," Chemeca 2013: Challenging Tomorrow,
p. 444, (2013).

[22] Fairthorne G., Fornasiero D., Ralston J., Effect of Oxidation on the Collectorless Flotation of Chalcopyrite, International Journal of Mineral Processing, 49: 31-48 (1997).

[23] Peng Y., Grano S., Fornasiero D., Ralston J., Control of Grinding Conditions in the Flotation of Chalcopyrite and its Separation from Pyrite, International Journal of Mineral Processing, 69: 87-100 (2003).

[24] Khmeleva T., Chapelet J., Skinner W.M., Beattie D. A., Depression Mechanisms of Sodium Bisulphite in the Xanthate-Induced Flotation of Copper Activated Sphalerite, International Journal of Mineral Processing, 79: 61-75 (2006).

[25] Khmeleva T., Skinner W., Beattie D.A., Depressing Mechanisms of Sodium Bisulphite in the Collectorless Flotation of Copper-Activated Sphalerite, International Journal of Mineral Processing, 76: 43-53 (2005).