Abstract
Decomposition and dissolution of limestone in slag at 1873 K (1600 °C) were studied. The limestone samples were in the shape of cubes (11 mm × 11 mm × 11 mm approximately). The decomposition was carried out both in argon and in slag under argon atmosphere. In order to gain an insight into the phenomenon of slow decomposition, the decomposition process of CaCO3 was simulated using Comsol. The results showed evidently that the decomposition of calcium carbonate was controlled mostly by heat transfer. It was also found that the decomposition product CaO had very dense structure, whether the sample was decomposed in slag or in argon. The slow decomposition and the dense CaO layer would greatly hinder the dissolution of lime in the slag. The present results clearly indicate that the addition of limestone instead of lime would not be beneficial in the converter process.
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References
J. Johnston: J. Am. Chem. Soc., 1910, Vol. 32, pp. 938-946.
J M. Criado, M. González, J. Málek, and A. Ortega: Thermochimica Acta, 1995, Vol.: 254, pp. 121-127.
A. W. D. Hills: Chem. Eng. Sci. 1968, Vol. 23, pp. 297-320.
G. Narsimhan: Chem. Eng. Sci. 1961, Vol. 16, pp. 7-20.
P. A. Simell, J. K. Leppälahti and E. A. Kurkela: Fuel, 1995, Vol. 74, pp. 938-945.
F. W. Wilburn, J. H. Sharp, D. M. Tinsley and R. M. Mcintosh: J. Therm. Anal. 1991, Vol. 37, pp. 2003-2019.
G. K. Jacobs, D. M. Kerrick and K. M. Krupka: Phys Chem Minerals, 1981, Vol. 7, pp. 55-59.
D. Dollimore, P. Tong and K. S. Alexander: Thermochinica Acta, 1996, Vols. 282-83, pp. 13-27.
F. R. Campbell, A. W. D Hills and A. Paulin: Chem. Eng. Sci., 1970, Vol. 25, pp. 929-942.
H.L.J. Bäckström (1925) J. Am. Chem. Soc. 47:2443-2449.
H. Li, L. Guo, Y. Li, W. Song, J. Feng, M. Liang, D. Dong, G. Wang, H. Zhang, S. Li, T. Zhang (2011) Advanced Materials Research. 233-235:2644-2647.
W. Song, H. Li, L. Guo, P. Yan, Y. Li, and J. Feng: Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference, 2011, Shanghai, pp. 991–94.
T. Deng, J. Gran, D. Sichen (2010) Steel Res. Int. 81(5):347-355.
Slag Atlas: Verein Deutscher Eisenhüttenleute, 2nd ed., Düsseldorf, Germany, 1995, p. 32.
T. Deng, B. Glaser, D. Sichen (2012) Steel Res. Int. 83:259-268.
CC Satterfield, F Feakes (1959) Aiche J 5(1):115-122.
COMSOL Multiphysics, Version: COMSOL 4.2a, COMSOL AB, Stockholm, Sweden, October 2011.
P.C. Hayes: Process Principles in Minerals and Materials Production, Hayes Publishing Co, Brisbane, 1993, pp. 635, 638, 644; ISBN: 0-9589197-2-0.
D.H. Do and E, Specht: Proceedings of the World Congress on Engineering and Computer Science 2011 Vol. II. WCECS 2011, October 19–21, 2011, San Francisco, USA. ISBN: 978-988-19251-7-6 ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online).
P. A. C. Gane, C.J. Ridgway, J. Schoelkopf, D.W. Bousfield: Journal of Pulp and Paper Science, 2007, Vol. 33, pp. 60–70.
T. Deng and D. Sichen: Metall. Mater. Trans. B, 2012, Vol. 43B, pp. 578–86.
K. Elert, C. Rodriguez-Navarro, E. S. Rardo, E. Hansen and O. Cazalla: Studies in Conservation, 2002, Vol. 47, pp. 62-75.
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The authors are thankful to Dr. Thierry Chopin for his valuable suggestions and stimulating discussions. Financial support and lime samples from Lhoist are gratefully acknowledged.
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Manuscript submitted May 18, 2012.
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Deng, T., Nortier, P., Ek, M. et al. Limestone Dissolution in Converter Slag at 1873 K (1600 °C). Metall Mater Trans B 44, 98–105 (2013). https://doi.org/10.1007/s11663-012-9761-0
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DOI: https://doi.org/10.1007/s11663-012-9761-0