Abstract
Galena (PbS) is leached by a solution concentrated in NaCl and containing ferrous and ferric chloride. The ferric ion concentration is kept constant by adding KMnO4 or the potential is kept constant by adding a concentrated ferric chloride solution. The ferrous concentration of the solution has no effect upon the kinetics, the temperature and the chloride concentration have only a weak effect, whereas the radius of solid particles and the concentration of the ferric ion have the major influences. The kinetics are represented by a shrinking core model for up to 99 pet of ore dissolved. Both the aqueous diffusion of ferric ion in the pores of the sulfur layer and the chemical reaction at the surface are involved in the kinetic model. Taking into account the self blockage improves the representation of the end of reaction and yields a more consistent set of parameters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. J. Murray: Ph.D. Thesis, University of Idaho, 1972.
R.M. Vygoda:Vysskh. Uchend. Zaved. Tsvetn. Metall., 1976, vol. 1, pp. 157–59.
H.A. Kametani: National Research Institute for Metals, Report 7.5, Tokyo, Japan, 1977.
J. M. Demarthe and A. Georgeaux:World Symposium on Metallurgy and Environmental Control, 1980. Las Vegas, NV, J.M. Cigan, T. S. Mackey, and T. J. O’Keefe. eds., TMS-AIME. New York. NY, 1979, pp. 426–54.
S. L. Pohlman and F. A. Olson:Mining Symposium, Soc. Min. Engr. AIME, 1974, Dallas. TX, F.F. Aplan. W. A. Mckinney, and A.D. Perhickele, eds., published by TMS-AIME, 1974, pp. 446–60.
R.L. Braun. A. E. Lewis, and M. E. Wadsworth:Metall. Trans., 1974, vol. 5, pp. 1717–26.
B.W. Madsen. M.E. Wadsworth. and R. D. Growes:Trans. Soc. Min. Eng., 1974, vol. 258, pp. 69–74.
J. E. Dutrizac and R. J. C. MacDonald:Minerals Sci. Engng., April 1974, vol. 6, no. 2, pp. 59–100.
P. H. Strickland and F. Lawson:International Symposium on Hydro-metallurgy, 1973, Chicago, IL, D.J.I. Evans and R.S. Shoemaker, eds., published by American Institute of Mining and Petroleum Engineers, 1973, pp. 293–330.
J.E. Dutrizac, R.J.C. MacDonald, and T.F. Ingraham:Metall. Trans., 1970, vol. 1, pp. 225–31.
M.E. Wadsworth: inRate Processes of Extractive Metallurgy, Hong Yong Sohn and Milton E. Wadsworth, eds., Plenum Press, New York, NY, 1979, pp. 133–97.
U.R. Evans:The Corrosion and Oxidation of Metals: Scientific Principles and Practical Applications. Edward Arnold, London, 1960, ch. xx, pp. 819–59.
M.E. Sherman and J. D. H. Strickland:Journal of Metals, 1957, vol. 9, pp. 795–800.
D. Morin: Doctoral Thesis, Ecole Des Mines, Paris, France, 1983.
Author information
Authors and Affiliations
Additional information
D. MORIN, formerly with the School of Mines, Paris. France
Rights and permissions
About this article
Cite this article
Morin, D., Gaunand, A. & Renon, H. Representation of the Kinetics of Leaching of Galena by Ferric Chloride in Concentrated Sodium Chloride Solutions by a Modified Mixed Kinetics Model. Metall Trans B 16, 31–39 (1985). https://doi.org/10.1007/BF02657485
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02657485