CaO x SiO2 x Al2O3 x MgO x FeO Slag

Name: CaO x SiO2 x Al2O3 x MgO x FeO
Diagram No.: 1144
Type of diagram: TTT
Chemical composition in weight %: CaO - SiO2 - 13% Al2O3 - 8% MgO - 25% FeO
Group: Slags
Note: (a) CCT and (b) TTT diagrams of CaO–SiO2-13 wt% Al2O3-8 wt% MgO-25 mass pct FetO slags with basicity ranging from 0.7 to 1.08. The triangle, circle and rectangle represent basicity of 0.7, 0.9 and 1.08, respectively [99].
Jung et al. have investigated the crystallization behavior and crystal growth of an FeO-rich steelmaking slag with different basicities by in-situ CSLM [99]. Figure 2.7 (a) and (b) present the TTT and CCT diagrams of the slag. The TTT diagram has a double nose shape and the higher basicity melt exhibits a delayed nose time. It suggests that the high basicity delays the crystallization. The start of crystallization occurs at a lower temperature (crystallization temperature) with increasing cooling rate. For the cooling rate ranging from 25 to 100 °C·min-1, the crystallization temperature decreases with increasing basicity, yet there is not a significant difference for crystallization temperature in the cooling rate above 400 °C·min-1.
Additional links: No. 1144, No. 1145, No. 1146, No. 1147
Reference: Not shown in this demo version.

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