Investigation of Dissolution Kinetics of Tincal Mineral in Ammonium Acetate Solution in High Solid / Liquid Ratios

The chemical formula of tincal mineral used in this study is Na20-2B203-10H20. The tincal ore, one of the important boron minerals, is extracted around Eskişehir in Turkey. Herein, we investigated the kinetics of dissolution in different parameters such as concentration, particle size, solid / liquid ratio, mixing speed and reaction temperature in the ammonium acetate solution of tincal mineral. As a result, boric acid production obtained by dissolution of tincal mineral in amunium acetate solution increased with temperature increase. However, in the dissolution process, boric acid production was found to be reduced by the increase in particle size and solid-liquid ratio.

Keywords:

Boron minerals, tincal, ammonium acetate dissolution, boric acid,

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Abalı Y, Bayca S.U, Mistincik E, 2006. Kinetics of Oxalic Acid Leaching of Tincal, Chem. Eng. J., 123, 25–30.
Abalı Y, Bayca S.U, Guler A.E, 2007. The Dissolution Kinetics of Tincal ın Phosphoric Acid Solutions, Int. J. Chem. React. Eng., 5(1).
Balasubramanian R, Lakshmi Narasimhan T.S, Viswanathan R, Nalini S, 2008. Investigation of the vaporization of boric acid by transpiration thermogravimetry and Knudsen effusion mass spectrometry, J. Phys. Chem., B 112, 13873–13884.
Dogan H.T, Yartaşı A¸ 2009. Kinetic investigation of reaction between ulexite ore and phosphoric acid, Hydrometallurgy., 96, 294–299.
Ekmekyapar A, Demirkıran N, Künkül A, 2008. Dissolution kinetics of ulexite in acetic acid solutions, Chem. Eng. Res. Design., 86, 1011–1016.
Ekmekyapar A, Baysar A, Kunkul A, 1997. Dehydration Kinetics of Tincal and Borax by Thermal Analysis, Ind. Eng. Chem. Res., 36, 3487–3490. Garret D.E, 1998. Borates, Academic Press, New York.
Gedikbey T, Birlik E, 2004. Kırka Tinkalinin Dehidratasyonunun ve Çözünürlüğünün Belirlenmesi, Paper Presented at The 2nd International Boron Symposium, September 23–25, in Eskişehir, Turkiye.
Gönen M, Balköse D, Ülkü S, 2011. Supercritical ethanol drying of zinc borates of 2ZnO•3B2O3•3H2O and ZnO•B2O3•2H2O, J. Supercrit. Fluids., 59, 43–52.
Helvacı C, 1978. A Review of The Mineralogy of The Turkish Borate Deposits, Mercian Geol., 6, 257–270.
King R.B, Mbroo R. B, 1992. Encylopedia of Inorganic Chemistry, vol 1, John Wiley & Sons, New York.
Özdemir M, ˙Kıpçak İ, 2010. Recovery of boron from borax sludge of boron industry, Miner. Eng., 23, 685–690.
Ozmetin C, Kocakerim M, Yapıcı S and Yartası A, 1996. A Semiempirical Kinetic Model for Dissolution of Colemanite ın Aqueous CH3COOH Solutions, Ind. Eng. Chem. Res., 35, 2355–2359.
Parks J.L, Edwards M, 2005. Boron in the Environment, Crit. Rev. Environ. Sci. Technol., 35, 81–114
Temur H, Yartası A, Copur M and Kocakerim M, 2000. The Kinetics of Dissolution of Colemanite ın H3PO4 Solutions, Ind. Eng. Chem. Res., 39, 4114–4119.
Yıldız A, Nas M. S, Kubilay S, Yılmaz S, 2010. Dissolution and Mechanism of Tincal ın Ammonium Carbonate Solutions, Asian J. Chem., 22, 765–771.