Mold flux characterization for thin slab casting of steel
DOI:
https://doi.org/10.3989/revmetalm.1138Keywords:
Fluxes, Particle size, Cuspidine, NephelineAbstract
The mineralogical constitution and the melting-solidification behavior of two commercial fluxes for thin slab casting of steel were determined. The characterization of the commercial fluxes as received show the presence of wollastonite (CaO. SiO2), a sodium carbonate (Na2CO3), calcite (CaCO3), fluorite (CaF2) and carbon as the main components by X ray powder diffraction (XRD) and microscopic techniques. When fluxes were heated to 1573 K and further solidification, there was almost a whole transformation from the original compounds to cuspidine (3CaO - 2SiO2 - CaF2) and nepheline (Na2O - Al2O3 - 2SiO2) phases. The thermal gravimetrical analysis showed an important weight reduction in both fluxes due to the thermal decompositions of calcite and sodium carbonate. The characterization reveals that fluxes are produced by an agglomeration process.
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References
[1] W.L. Mc Cauley and D. Apelian, Iron and Steelmaker, 10 (1983) 38-39.
[2] P. Riboud and M. Larrecq,AIME Steelmaking Proc. 62 (1979) 78-92.
[3] A. Cruz, F. Chávez and J. A. Romero, Rev. Metal. Madrid 40 (2004) 39-45.
[4] M. Kawamoto, K. Nakajima, T. Kanazawa and K. Nakai, ISIJ Int. 34 (1994) 593-598. http://dx.doi.org/10.2355/isijinternational.34.593
[5] M. Hanao, M. Kawamoto and T. Watanabe, ISIJ Int. 44 (2004) 827-835. http://dx.doi.org/10.2355/isijinternational.44.827
[6] A. Cruz, F. Chávez, A. Romero, E. Palacios and V. Arredondo, J. Mater. Process. Tech. 182, 1- 3 (2007) 358-362.
[7] H. Chang, T. Lee and E. Tatsuhiko, Transactions ISIJ 27 (1987) 797-804.
[8] P. Grieveson, S. Bagha, N. Machingawuta, K. Liddell and K.C. Mills, Ironmak Steelmak, 15 (1988) 181-186.
[9] R. Bommaraju, Steelmaking Conference Proc., ISS-AIME 74, 1991, pp 131-146.
[10] T. Watanabe, H. Fukuyama and K. Nagata, ISIJ Int. 42 (2002) 489-497. http://dx.doi.org/10.2355/isijinternational.42.489
[11] R. Soares, M. Fonseca, R. Neuman, V. Meneses A. Lavinas and J. Dweck, Termochimica Acta 318 (1998) 131-136. http://dx.doi.org/10.1016/S0040-6031(98)00337-2
[12] R.G. Hill, N. Da Costa and R.V. Law, J. Non-Cryst. Solids 351 (2005) 69-74. http://dx.doi.org/10.1016/j.jnoncrysol.2004.07.085
[13] J. Romo, A. Cruz, A. Romero, M. Vargas and M. Hallen, Termochimica Acta 512 (2011) 129-133. http://dx.doi.org/10.1016/j.tca.2010.09.014
[14] C. Klein and C. Hurlbut, Manual of mineralogy, Ed. John Wiley & Sons, Singapure, 1977, pp. 234-253.
[15] P. Kerr, Optical mineralogy, Ed. Mc Graw-Hill, USA,1977, pp.148-175.
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