JMMCE  Vol.11 No.7 , July 2012
Model for Prediction of the Concentration of Extracted Tin during Leaching of Cassiterite in Potassium Hydroxide Solution
ABSTRACT
Model for prediction of the concentration of tin extracted during potassium hydroxide leaching of cassiterite has been derived. The model: A = Nt1.53, indicates that the concentration tin extracted is dependent on the residence time. It was found that the validity of the model is rooted in the expression Log A = Log (Nt1.53). Tin extraction per unit time as obtained from experiment and derived model are 2.6666 and 2.6268 mg/min respectively. The maximum deviation of the model-predicted concentration of dissolved tin from the corresponding concentration obtained from the experiment was found to be less than 8%, which is quite within the acceptable deviation limit of experimental results and hence, impacting about 92% confidence coefficient on the model.

Cite this paper
O. Gerald, U. Priscilla, O. Martin, E. Emmanuel, N. Chukwuka and J. Hwang, "Model for Prediction of the Concentration of Extracted Tin during Leaching of Cassiterite in Potassium Hydroxide Solution," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 7, 2012, pp. 730-734. doi: 10.4236/jmmce.2012.117060.
References
[1]   A. A. Baba, F. A. Adekola and A. O. Folashade, “Quan-titative Leaching of a Nigerian Iron Ore in Hydrochloric Acid,” Journal of Applied Sciences & Environmental Management, Vol. 9, No. 3, 2005, pp. 15-20.

[2]   P. K. Jena, “Chloride Process in Treating Ores and Wastes, Institute of Advanced Technology and Environmental Studies and Natural Resources Development Foundation,” 80A-81A, 2000.

[3]   M. O. C. Ogwuegbu and F. Chileshe, “Coordination Chemistry in Mineral Processing,” Mineral Processing and Extractive Metallurgy Review, Vol. 21, 2000, pp. 497 -525.

[4]   E. A. Brocchi and F. J. Moura, “Chlorination Methods Applied to Recover Refractory Metals from Tin Slags,” Minerals Engineering, Vol. 21, No. 2, 2008, pp. 150-156. doi:10.1016/j.mineng.2007.08.011

[5]   S. A. Martell, “Extraction of Tin from Its Ores,” United States Patent No. 4638074.

[6]   G. E. P. Box and N. R. Draper, “Empirical Model- Building and Response Surfaces,” Wiley, London, 1987, p. 424.

[7]   Z. Peng, J.-Y. Hwang, C. Park, B. Kim and G. Onyedika, “Numerical Analysis of Heat Transfer Characteristics in Microwave Heating of Magnetic Dielectrics,” Metallurgical and Materials Transaction A, Vol. 43, No. 3, 2012, pp. 1070-1078.

[8]   C. I. Nwoye, G. C. Obasi, U. Mark, C. C. Nwankwo and S. Inyama, “Model for Calculating the Concentration of Leached Iron Relative to the Final Solution Temperature during Sulphuric Acid Leaching of Iiron Oxide Ore,” New York Science Journal, Vol. 2, No. 3, 2009, pp. 49-54.

[9]   C. I. Nwoye, “Synchro Well Research Work Report,” DFM Unit, No. 2561178, 2006, pp. 66-83.

[10]   C. I. Nwoye, “Model for Computational Analysis of Dissolved Haematite and Heat Absorbed by Oxalic Acid Solution during Leaching of Iron Oxide Ore,” Journal of Engineering and Applied Sciences, Vol. 4, 2008, pp. 22- 25.

[11]   C. I. Nwoye, R. A. Umana, G. C. Obasi, U. C. Nwoye and C. C. Nwakwuo, “Model for the Calculation of the Concentration of Dissolved Haematite during Hydrogen Peroxide Leaching of Iron Oxide Ore,” International Journal of Engineering and Applied Science, Vol. 8, 2009, pp. 339-347.

 
 
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