Abstract
A shrinking core model for the FeCl3 leaching of galena (PbS), which accounts for the microstructure previously observed during this process, is presented. The microstructure is characterized by two distinct product layers—PbCl2 in direct contact with the PbS core and So above the PbCl2 layer. Rate equations for the evolution of the three solid phases and the PbS leaching conversion are derived for the case of flat plate geometry appropriate for the reaction of massive galena fragments. In the case of rate control by diffusion of the lead chloride reaction products through the So layer, the system is shown to exhibit parabolic behavior as long as the So layer is built up primarily at the PbCl2-So interface. For the mechanism considered in this study, negative deviation from parabolic behavior is observed to increase as the amount of So forming at the external So-solution interface rises. When the system is controlled by surface reaction kinetics, the model predicts linear rates under all circumstances.
Similar content being viewed by others
References
P.R. Kruesi: Min. Congr. J., 1974, vol. 60, pp. 22–23.
J.M. Demarthe and A. Georgeaux: Lead-Zinc-Tin ’80, J.M. Cigan, T.S. Mackey, and T.J. O’Keefe, eds., TMS, Warrendale, PA, 1979, pp. 426–44.
E. Anderson, G.H. Boe, T. Daniellsen, and P.M. Finne: in Complex Sulphide Ores, M.J. Jones, ed., IMM, London, 1980, pp. 186–92.
F.W. Schweitzer and R.W. Livingston: in Chloride Electrometallurgy, P.D. Parker, ed., AIME, New York, NY, 1982, pp. 221–27.
P.K. Everett: in Hydrometallurgy Research Development and Plant Practice, K. Osseo-Asare and J.D. Miller, eds., TMS, Warrendale, PA, 1982, pp. 165–73.
M.M. Wong, R.G. Sandberg, C.H. Elges, and D.C. Fleck: U.S. Bureau of Mines Report No. RI-8770, Government Printing Office, Washington, DC, 1983.
S.E. James and C.O. Bounds: Int. Symp. on Complex Sulphides, R.S. Boorman, A.E. Morris, R.J. Wesley, and A.D. Zunkel, eds., TMS, Warrendale, PA, 1985, pp. 441–55.
E. Ozberk, J.E. Dutrizac, and R. Minto: in Extraction Metallurgy ’89, IMM, London, 1989, pp. 861–84.
R. Murray: Ph.D. Thesis, University of Idaho, Moscow, ID, 1972.
G.P. Demopoulos: Master’s Thesis, McGill University, Montreal, PQ, Canada, 1977.
K. Arai, H. Majima, and T. Izaki: J. Min. Met. Inst. Jpn., 1979, vol. 95, pp. 359–63.
S.S. Kim and I.B. Kim: J. Kor. Met. Soc., 1980, vol. 18, pp. 586–92.
E. Ghali and B. Dandapani: J. Appl. Electrochem., 1980, vol. 10, pp. 335–44.
B. Dandapani and E. Ghali: J. Electrochem. Soc., 1982, vol. 129, pp. 271–76.
H. Kametani: J. Min. Met. Inst. Jpn., 1983, vol. 99, p. 117.
H. Kametani: J. Min. Met. Inst. Jpn., 1983, vol. 99, p. 207.
C.-C. Chen: Master’s Thesis, South Dakota School of Mines and Technology, Rapid City, SD, 1984.
M.E. Wadsworth: in Hydrometallurgical Process Fundamentals, R. Bautista, ed., Plenum Publishing Co., New York, NY, 1984, pp. 41–76.
D. Morin, A. Gaunaund, and H. Renon: Metall. Trans. B, 1985, vol. 16B, pp. 31–39.
J.E. Dutrizac: Metall. Trans. B, 1986, vol. 17B, pp. 5–17.
S.H. Kim, H. Henein, and G. Warren: Metall. Trans. B, 1986, vol. 17B, pp. 29–39.
M.C. Fuerstenau, C.-C. Chen, K.N. Han, and R.B. Palmer: Metall. Trans. B, 1986, vol. 17B, pp. 415–23.
G.W. Warren, S.-H. Kim, and H. Henein: Metall. Trans. B, 1987, vol. 18B, pp. 59–69.
P.C. Rath, P.K. Paramguru, and P.K. Jena: Trans IMM. Sec. C, 1988, vol. 97C, pp. 150–58.
H.Y. Sohn and H.D. Baek: Metall. Trans. B, 1989, vol. 20B, pp. 107–10.
C.-K. Lee, J.-B. Ryu, H.-J. Sohn, and T. Kang: in Productivity and Technology in the Metallurgical Industries, M. Koch and J.C. Taylor, eds., TMS, Warrendale, PA, 1989, pp. 705–16.
M. Kobayashi, J.E. Dutrizac, and J.M. Toguri: Can. Metall. Q., 1990, vol. 29, pp. 201–11.
J.E. Dutrizac and T.T. Chen: Metall. Trans. B, 1990, vol. 21B, pp. 935–43.
J.E. Dutrizac: Hydrometallurgy, 1992, vol. 29, pp. 1–45.
M. Cano and G. Lapidus: Int. Symp. on Modelling, Simulation and Control of Hydrometallurgical Processes, V.G. Papangelakis and G.P. Demopoulos, eds., CIM, Montreal, PQ, Canada, 1993, pp. 77–90.
M.D. Pritzker: Trans. IMM, Sec. C, 1991, vol. 100C, pp. 115–17.
M.D. Pritzker: Metall. Trans. B, 1995, vol. 26B, pp. 901–10.
M.D. Pritzker: Chem. Eng. Sci., 1996, vol. 51, pp. 3631–45.
P.D. Scott and M.J. Nicol: Trans. IMM, Sec. C, 1976, vol. 85, pp. 40–44.
Y. Awakura, S. Kamel, and H. Majima: Metall. Trans. B, 1980, vol. 11B, pp. 377–81.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pritzker, M. Model for the ferric chloride leaching of galena. Metall Mater Trans B 29, 953–960 (1998). https://doi.org/10.1007/s11663-998-0063-5
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11663-998-0063-5