Table 3 Chemical composition of fired M2-K2 specimens after firing at 1100 °C for 1 h
From: To blend is a good solution to improve the heat insulation applicability of diatomite ores
Constituent, % | M2 addition by mass% | ||||
|---|---|---|---|---|---|
5 | 15 | 30 | 40 | 50 | |
SiO2 | 68.90 | 64.86 | 58.55 | 54.23 | 49.63 |
Al2O3 | 11.00 | 10.44 | 9.58 | 8.99 | 8.36 |
Fe2O3 | 8.35 | 8.08 | 7.66 | 7.37 | 7.06 |
MnO | 0.03 | 0.03 | 0.04 | 0.05 | 0.05 |
MgO | 1.25 | 1.33 | 1.46 | 1.56 | 1.65 |
CaO | 5.72 | 10.52 | 18.01 | 23.24 | 28.60 |
Na2O | 0.94 | 0.98 | 1.05 | 1.09 | 1.14 |
K2O | 1.13 | 1.08 | 1.01 | 0.96 | 0.91 |
TiO2 | 0.97 | 0.95 | 0.91 | 0.88 | 0.85 |
Ca/Si | 0.58 | ||||
Ca/Al + Si | 0.49 | ||||
Al/Al + Si | 0.16 | ||||
Ca/Si + Mg | 0.55 | ||||