CaO–SiO2 Based Slags

Name: CaO–SiO2 Based Slags
Diagram No.: 1169
Type of diagram: CCT
Chemical composition in weight %: See the table
Group: Slags
Note: CCT curves of mold fluxes. (a) A, (b) B1, (c) B2, (d) B3, and (e) critical cooling rate of mold fluxes.
Figure 9a–d shows the CCT curves of the four mold fluxes. It can be noticed that the crystallization temperatures for all samples decreased with an increase in the continuous cooling rate. Gao et al. indicated that the nucleation and growth rate of crystals were functions of the viscosity and the degree of undercooling of molten slag. As the viscosity increased during cooling, a stronger driving force was needed to initiate the mold flux nucleation. Therefore, the crystallization temperature decreased with an increasing continuous cooling rate. The critical cooling rate of the four mold fluxes is shown in Figure 9e. As can be found in Figure 9e, the critical cooling rate increased first and then decreased with the increase in bubble content.
Reference: Not shown in this demo version.

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