Leaching kinetics of celestite in nitric acid solutions
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In this study, strontium nitrate extraction from celestite in nitric acid solutions was investigated using the leaching method. The influences of acid concentration, solid-to-liquid ratio, stirring speed, and reaction temperature on the leaching of strontium from celestite concentrate were studied. The results showed that the leaching rate increased with increasing acid concentration, stirring speed, and temperature and decreased with increasing solid-to-liquid ratio. The particle size was fixed in all of the dissolution experiments. The results showed that the stirring speed and the temperature were the most influential parameters with respect to the leaching process. The kinetic model best fit control by diffusion through the product layer. The activation energy of the dissolution celestite in nitric acid solutions was calculated to be 42.22 kJ/mol.
Keywordsdissolution hydrometallurgy leaching kinetics separation strontium nitrate
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This work was financially supported by the Science Research Project Committee of Manisa Celal Bayar University (No. BAP 2013-101).
- P.W. Harben and M. Kuzvart, Industrial Minerals: A Global Geology, Industrial Minerals Information Ltd, London, 1996.Google Scholar
- J.P. Macmillan, J.W. Park, R. Gerstenberg, H. Wagner, K. Köhler, and P. Wallbrecht, Strontium and Strontium Compounds, John Wiley & Sons, New York, 2012.Google Scholar
- R.O. Ajemba and O.D. Onukwuli, Dissolution kinetics and mechanisms of reaction of Udi clay in nitric acid solution, Am. J. Sci. Ind. Res., 3(2012), No. 3, p. 115.Google Scholar
- K. Liddell, T. Newton, M.D. Adams, and B. Muller, Energy consumption for Kell hydrometallurgical refining versus conventional pyrometallurgical smelting and refining of PGM concentrates, J. South Afr. Inst. Min. Metall., 111(2011), No. 2, p. 127.Google Scholar
- I.U. Ermis, Production of Ammonium Sulfate and Strontium Carbonate via Leaching Methods From Strontium Sulfate Concentrate [Dissertation], T.C. Selcuk University of Science and Technology Institute, Konya, 2011.Google Scholar
- F. De Buda, Method for Recovery and Conversion of Strontium Sulphate to Strontium Carbonate from Low and Medium Grade Celestite Ores, US Patent, Appl.US4666688A, 1987.Google Scholar
- F. Kocan and U. Hicsonmez, Leaching of celestite in sodium hydroxide solutions and kinetic modelling, J. Dispersion Sci. Technol., 2018. https://doi.org/10.1080/01932691.2018.1464466.Google Scholar
- Q.C. Feng, S.M. Wen, Y.J. Wang, W.J. Zhao, J.S. Deng, Investigation of leaching kinetics of cerussite in sodium hydroxide solutions, Physicochem. Prob. Miner. Process., 51(2015), No. 2, p. 491.Google Scholar
- O. Levenspiel, Chemical Reaction Engineering, John Wiley & Sons, New York, 1999.Google Scholar
- T. Rosenqvist, Principles of Extractive Metallurgy, McGraw-Hill Book Company, New York, 1980.Google Scholar
- C. Bilal, The Reaction Kinetics of Colemanite with Sulfuric Acid [Dissertation], Technical University, Istanbul, 2003.Google Scholar
- H.L. Hosgun, Dissolution Kinetics of Aluminum from Kaolin in HCl and NaOH Solutions [Dissertation], Osmangazi University, Eskisehir, 1996.Google Scholar
- M. Kandilcik, Dissolution Kinetics of Tincal Mineral in Ammonium Sulfate Solutions [Dissertation], Yuzuncu Yil University, Van, 2013.Google Scholar
- A. Aran, Materials Science Lecture Notes [Dissertation], Istanbul Technical University, Istanbul, 2008.Google Scholar