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Question 7 (12%): Upon consideration of the SiO2-Al2O3 phase diagram in Figure below, compute the mass fraction of liquid in the following fireclay refractory material at 1600°C. Given: $W_L = \frac{C_{mullite} - C_0}{C_{mullite} - C_L}$ (a) 20 wt% Al2O3-80 wt% SiO2 Figure 12.25 The silica-alumina phase diagram. (Adapted from F. J. Klug, S. Prochazka, and R. H. Doremus, \"Alumina-Silica Phase Diagram in the Mullite Region,\" J. Am. Ceram. Soc., 70 [10] 758 (1987). Reprinted by permission of the American Ceramic Society.)

          Question 7 (12%): Upon consideration of the SiO2-Al2O3 phase diagram in Figure below, compute the mass fraction of liquid in the following fireclay refractory material at 1600°C. Given: $W_L = \frac{C_{mullite} - C_0}{C_{mullite} - C_L}$ (a) 20 wt% Al2O3-80 wt% SiO2 Figure 12.25 The silica-alumina phase diagram. (Adapted from F. J. Klug, S. Prochazka, and R. H. Doremus, \"Alumina-Silica Phase Diagram in the Mullite Region,\" J. Am. Ceram. Soc., 70 [10] 758 (1987). Reprinted by permission of the American Ceramic Society.)

$Question 7 (12%): Upon consideration of the SiO2-Al2O3 phase diagram in Figure below, compute the mass fraction of liquid in the following fireclay refractory material at 1600°C. Given: $WL = \frac{C{mullite} - C0}{C{mullite} - CL}$ (a) 20 wt% Al2O3-80 wt% SiO2 Figure 12.25 The silica-alumina phase diagram. (Adapted from F. J. Klug, S. Prochazka, and R. H. Doremus, \"Alumina-Silica Phase Diagram in the Mullite Region,\" J. Am. Ceram. Soc., 70 [10] 758 (1987). Reprinted by permission of the American Ceramic Society.)$

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