Specifications :Zero expansion silica brick(fused silica brick)
Size:230*114*65/75mm
Zero expansion silica brick have variety of specification.
This brick has good thermal shock resistance and is suitable for the cover plate and bar arch in glass feeder channel. It is widely used in high-temperature kilns such as glass, chemicals, and nonferrous metals.
Index | Unit | Mechanical Press | Casting |
SiO₂/% | % | ≥98 | ≥97 |
Al₂O₃/% | % | ≤0.3 | ≤0.4 |
Bulk Density | g/cm³ | ≥1.90 | ≥1.86 |
Apparent Porosity | g/cm³ | ≤18 | ≤19 |
Cold Crushing Strength | MPa | ≥45 | ≥40 |
0.2MPa,T0.6/℃ Refractoriness under Load | ℃ | ≥1650 | ≥1600 |
Thermal Shock Stability (1100°℃,water cooling)1times | times | ≥30 | ≥30 |