Silica Bricks we produce for hot stoves have the features, such as, low expansion coefficient, little content of residual quartz, low true density, good thermal stability above 600℃, high refractoriness under load, low creeping rate, good dimensional accuracy, etc. They are mainly applied in the following sections of hot stove and blast furnace, incl. the roof, upper chamber body, upper checkers high-temperature area, etc.
|
Item/Specifications |
Guaranteed Value |
Typical Value |
|
SiO2 % ≥ |
95.5 |
96 |
|
Apparent Porosity % ≤ |
21 |
20 |
|
Cold Crushing Strength Mpa ≥ |
35 |
45 |
|
Thermal Expansion (1100℃) ≤ |
1.25 |
1.2 |
|
0.2Mpa Creep rate（1500°C*50h）% ≤ |
0.3 |
0.2 |
|
Refractoriness under load 0.2 Mpa (T0.6) °C ≥ |
1660 |
1670 |
|
Residual quartz,% ≤
|
1.0 |
0 |
