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Current Works in Mineral Processing
CWiMP > Volume 1, Number 1, March 2019

UV-Vis Study of Mixed Collector Adsorption on Pyrite towards the Better Understanding of the Adsorption Mechanism

Download PDF  (986.8 KB)PP. 13-20,  Pub. Date:March 25, 2019
DOI: 10.22606/cwimp.2019.11002

Author(s)
Akira Otsuki, Yihong Zhao
Affiliation(s)
Ecole Nationale Supérieure de Géologie, GeoRessources UMR 7359 CNRS, University of Lorraine, 2 Rue du Doyen Marcel Roubault, BP 10162, 54505, Vandoeuvre-lès-Nancy, France
WA School of Mines, Curtin University, Kalgoorlie, Australia
Abstract
This paper discusses the primary collector adsorption onto a sulphide mineral in mixed collector systems to further understand its adsorption mechanism. UV-Vis measurements were performed to identify the primary collector concentration adsorbed on pyrite, and the adsorption kinetics under different conditions were compared to distinguish their difference between single and mixed collector systems. Small amount of secondary collector addition prior to the primary collector addition significantly improved the adsorption kinetics of primary one. The result was explained by the combination of two previously proposed mechanisms (i.e., different adsorption site mechanism and multi-layer product mechanism). This study showed UV-Vis measurement as an effective tool to study mixed collector adsorption behavior.
Keywords
Primary collector; secondary collector; adsorption kinetics; sulphide
References
  • [1]  Lotter, N.O., & Bradshaw, D. J. (2010). The formulation and use of mixed collectors in sulphide flotation. Minerals Engineering, 23, 945–951.
  • [2]  Wills, B.A., & Napier-Munn, T. (2006). Wills' mineral processing technology an introduction to the practical aspects of ore treatment and mineral recovery. 7th ed. Amsterdam; Boston ; London: Elsevier/BH.
  • [3]  Bradshaw, D.J. (1997). Synergistic effect between thiol collectors used in the flotation of pyrite. PhD thesis, University of Cape Town.
  • [4]  Bradshaw, D.J., Harris, P.J., & O'Connor, C.T. (1998). Synergistic interactions between reagents in sulphide flotation. J. South African Inst. Mining Metallurgy, 189–194.
  • [5]  Rao, K., Forssberg, K.S.E. (1997). Mixed collector systems in flotation. Int. J. Miner. Process. 51, 67–79.
  • [6]  Bradshaw, D.J., Cruywagen, J.J., & O'Connor, C.T. (1995). Thermochemical measurements of the surface reactions of sodium cyclohexyl-dithiocarbamate, potassium n-butyl xanthate and a thiol mixture with pyrite. Minerals Engineering, 8, 1175–1184.
  • [7]  Plaskin, I. N., & Zaitseva, S. P. (1960). Effect of the combined action of certain collectors on their distribution between galena particles in a flotation pulp, (Mintek Translation No.1295, 1988) Naachnye Soobshcheniya Institut Gonnogo dela Imeni AA Skochinskogo, Akademiya Nauk SSSR, Moskva 6, 15–20.
  • [8]  Bradshaw, D.J., & O'Connor, C.T. (1994). The flotation of pyrite using mixtures of dithiocarbamates and other thiol collectors. Minerals Engineering 7, 681–690.
  • [9]  Bagci, E., Ekmekci, Z., & Bradshaw, D. (2007). Adsorption behaviour of xanthate and dithiophosphinate from their mixtures on chalcopyrite. Minerals Engineering, 20, 1047–1053.
  • [10]  Glembotskii, A.A. (1958). The combined action of collectors during flotation. Tsvetnye Metally, 4, 6–14.
  • [11]  Woods, R. (1994). Chemisorption of thiols and its role in flotation. A. Sutolov memorial volume. In: Castro, I. S. & Alvares, J. (Eds.) V Meeting of Southern Hemisphere on Mineral Technology;and III Latin American Congress on froth flotation. Universidad de Conception, Conception, Chile.
  • [12]  O'Connor, C.T., & Dunnew, R.C. (1991). The practice of pyrite flotation in South Africa and Australia. Minerals Engineering 4, 1057–1069.
  • [13]  Nguyen, A.V. (2007). Flotation. In: Poole, C.F., Cooke, M., Wilson, I.D. (Eds.). Encyclopedia of Separation Science, pp.1-27, Academic Press, London.
  • [14]  Wang, X.H., & Forssberg, K.S.E. (1991). Mechanisms of pyrite flotation with xanthates. Int. J. Miner. Proc. 33, 275–290.
  • [15]  Montalti, M., Fornasiero, & D., Ralston, J. (1991). Ultraviolet-visible spectroscopic study of the kinetics of adsorption of ethyl xanthate on pyrite. J. Colloid Interface Sci., 143, 440–450.
  • [16]  Fuerstenau, M.C. (eds.) (1976). Flotation: A.M. Gaudin memorial volume, Vol.1, American Institute of Mining, Metallurgical, and Petroleum Engineers, New York.
  • [17]  Nir, S. (1976). van der Waals interactions between surfaces of biological interest. Progress in surface science, 8, 1–58.
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