TY - JOUR
T1 - Thermodynamic modeling of mineralogical phases formed by continuous casting powders
AU - Romo-Castañeda, Julio
AU - Cruz-Ramírez, Alejandro
AU - Romero-Serrano, Antonio
AU - Vargas-Ramírez, Marissa
AU - Hallen-López, Manuel
PY - 2011/1/10
Y1 - 2011/1/10
N2 - A great amount of mineralogical phases were predicted and represented in stability phase diagrams, which were obtained by the use of the thermodynamic software FACTSage considering both the chemical composition and the melting temperature of the mould flux. Melting-solidification tests on commercial mould flux glasses for thin slab casting of steel revealed the existence of cuspidine (Ca4Si2O7F2) as the main mineralogical phase formed during the flux solidification by X-ray powder diffraction (XRD). This phase directly influences the heat transfer phenomena from the strand to the mould and it is obtained with higher fluorite content (22% CaF2). Cuspidine is desirable only in fluxes to produce medium carbon (included peritectic grade) steels, because it reduces the heat flux from the strand to the mould, thus controlling the shrinkage rate during the flux solidification. The experimental results are in agreement with those obtained by the thermodynamic software. The stability phase diagrams could be used as an important tool in the flux design for continuous casting process.
AB - A great amount of mineralogical phases were predicted and represented in stability phase diagrams, which were obtained by the use of the thermodynamic software FACTSage considering both the chemical composition and the melting temperature of the mould flux. Melting-solidification tests on commercial mould flux glasses for thin slab casting of steel revealed the existence of cuspidine (Ca4Si2O7F2) as the main mineralogical phase formed during the flux solidification by X-ray powder diffraction (XRD). This phase directly influences the heat transfer phenomena from the strand to the mould and it is obtained with higher fluorite content (22% CaF2). Cuspidine is desirable only in fluxes to produce medium carbon (included peritectic grade) steels, because it reduces the heat flux from the strand to the mould, thus controlling the shrinkage rate during the flux solidification. The experimental results are in agreement with those obtained by the thermodynamic software. The stability phase diagrams could be used as an important tool in the flux design for continuous casting process.
KW - Cuspidine
KW - Flux
KW - Mineralogical phases
KW - Solidification
KW - Thermodynamic
UR - http://www.scopus.com/inward/record.url?scp=78650288907&partnerID=8YFLogxK
U2 - 10.1016/j.tca.2010.09.014
DO - 10.1016/j.tca.2010.09.014
M3 - Artículo
SN - 0040-6031
VL - 512
SP - 129
EP - 133
JO - Thermochimica Acta
JF - Thermochimica Acta
IS - 1-2
ER -