Abstract
Investigations were conducted to purify crude Li2CO3 via direct carbonation with CO2-water solutions at atmospheric pressure. The experiments were carried out in a slurry bubble column reactor with 0.05 m inner diameter and 1.0 m height. Parameters that may affect the dissolution of Li2CO3 in the CO2-water solutions such as CO2-bubble perforation diameter, CO2 partial pressure, CO2 gas flow rate, Li2CO3 particle size, solid concentration in the slurry, reaction temperature, slurry height in the column and so on were investigated. It was found that the increases of CO2 partial pressure, and CO2 flow rate were favorable to the dissolution of Li2CO3, which had the opposite effects with Li2CO3 particle size, solid concentration, slurry height in the column and temperature. On the other hand, in order to get insight into the mechanism of the refining process, reaction kinetics was studied. The results showed that the kinetics of the carbonation process can be properly represented by 1−3(1−X)2/3+2(1–X)=kt+b, and the rate-determining step of this process under the conditions studied was product layer diffusion. Finally, the apparent activation energy of the carbonation reaction was obtained by calculation. This study will provide theoretical basis for the reactor design and the optimization of the process operation.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
P. M. Brown, US Patent, 4,036,713 (1977).
P. M. Brown and C. E. Falletta, US Patent, 4,207,297 (1980).
K. Amouzegar, G. S. Armant and S. Harrison, US Patent, 6,048,507 (2000).
S. Harrison, K. Amouzegar and G.S. Armant, US Patent, 20,010,028,871 (2001).
G. S. Armant, K. Amouzegar and S. Harrison, US Patent, NZ504,956 (2002).
B. Leutner (DE), H. Friedrich (DE) and J. Pfeffinger (DE), US Patent, 6,592,832 (2003).
D. K. Lee, Chem. Eng. J., 100, 71 (2004).
A. I. Fernández, J. M. Chimenos, M. Segarra, M. A. Fernández and F. Espiell, Hydrometallurgy, 53, 155 (1999).
F. Fang, Z. S. Li and N. S. Cai, Korean J. Chem. Eng., 26, 1414 (2009).
S. C. Lee, B.Y. Chio, C. K. Ryu, Y. S. Ahn, T. J. Lee and J. C. Kim, Korean J. Chem. Eng., 23, 374 (2006).
K. S. Hwang, S.W. Park, D.W. Park, K. J. Oh and S. S. Kim, Korean J. Chem. Eng., 26, 1383 (2009).
L. N. Plummer and T. M. L. Wigley, Geochim Cosmochim. Acta, 40, 191 (1976).
R. E. Loewenthal and G.V. Maria, Carbonate chemistry of aquatic systems: Theory and applications, vol.1, Ann Arbor, MI (1982).
J. T. Edsall, in CO 2: Chemical, biochemical, and physiological aspects, R. E. Foster, J. T. Edsall, A. B. Otis and F. J.W. Roughton Eds., NASA, Washington DC (1969).
T. G. Wang and Z. H. Li, Chem. Eng.(China), 33, 39 (2005).
C. F. Zhang, Gas-liquid reaction and reactor, Chemical Industry Press, Beijing (1985).
C.W. Robert, Handbook of chemistry and physics, 55th Ed., CRC Press (1974–1975).
W. S. Dodds, L. F. Stutzman and B. J. Sollami, Ind. Eng. Chem., Chem. Eng. Data Series, 1, 92 (1956).
J. Wang, Y. Mao, Y. S. Liu and R. Cao, Chem. Eng. (China), 34, 28 (2006).
S. H. Zhang, T. Li, B. C. Zhu and Z. B. Zhu, J. Chem. Ind. Eng., 56, 200 (2005).
L. N. Plummer, T. M. L. Wigley and D. L. Parkhurst, Critical review of the kinetics of calcite dissolution and precipitation, in: E. A. Jenne (Ed.), Chemical Modeling of Aqueous Systems, American Chemical Society Symposium, Series, 93, 537 (1979).
I.A. E. Samir, M. J. J. Anabtawi and S. L. Isaac, Chem. Eng. Process., 43, 1085 (2004).
Y.G. Ma, X.W. Yang, H. S. Feng and K. T. Yu, Chem. Eng. (China), 32, 1 (2004).
X. C. Fu, W. X. Shen and T.Y. Yao, Physical Chemistry, 4th Ed., High Education Press, Beijing (1990).
J. Szekely, J.W. Evans and H.Y. Sohn, Gas-solid reactions, 1st Ed., Chinese Building Industrial Press, Beijing (1986).
H. X. Guo, Applied chemical engineering kinetics, 1st Ed., Chemical Industry Press, Beijing (2003).
H. L. Fan, CH. H. Li and K. C. Xie, Fuel, 81, 91 (2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yi, WT., Yan, CY. & Ma, PH. Kinetic study on carbonation of crude Li2CO3 with CO2-water solutions in a slurry bubble column reactor. Korean J. Chem. Eng. 28, 703–709 (2011). https://doi.org/10.1007/s11814-010-0405-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-010-0405-2