Description
Fused quartz brick is a kind of high-performance refractory material, which made of high-purity quartz sand as the main raw material, with silica content usually greater than 97%. Fused quartz brick has low thermal expansion coefficient, good thermal shock resistance and chemical stability.
Fused quartz bricks have a dense structure and low apparent porosity, which make them resist various physical and chemical effects in high temperature environments.
Fused quartz bricks are widely used in high-temperature industrial fields such as glass kilns, metallurgy, and ceramics. They can be used as lining materials for key parts, effectively improving the service life and operating efficiency of equipment.
Specifications
| Items | Grades | ||
| FQ – 97 | FQ – 98 | FQ – 99 | |
| ω(SiO2) / % | ≥97 | ≥98 | ≥98.5 |
| ω(Al2O3) / % | ≤0.5 | ≤0.3 | ≤0.2 |
| ω(Fe2O3) / % | ≤0.3 | ≤0.2 | ≤0.1 |
| Density / (g/cm3) | ≥1.75 | ≥1.80 | ≥1.85 |
| Open Porosity / % | ≤22.0 | ≤20.0 | ≤18.0 |
| CCS / MPa | ≥25 | ≥30 | ≥35 |
| 0.2 MPa R.U.L / ℃ | ≥1500 | ≥1600 | ≥1650 |
| CTE (1000℃) / % | ≤0.20 | ||
| TSR (1100℃, Cold Water) / cycles | ≥30 | ≥30 | ≥30 |
Applications
Fused quartz bricks are often used in the pool walls of glass melting furnaces to resist the erosion of high-temperature glass liquid, ensure the stability of glass quality, reduce the introduction of impurities, and increase the service life of the melting furnace.
In polycrystalline silicon ingot furnaces, fused quartz bricks are also used as furnace lining materials, which can provide a stable high-temperature environment for silicon material melting and crystallization, helping improve silicon ingot quality and production efficiency.
Fused quartz bricks are also used in refractory test furnaces, ceramic sintering furnaces, etc.
