Jun 30, 2021
Silica Insulation Bricks
Feature of Light Weight Silica Insulation Bricks:
1.Low bulk density,
2.Low thermal conductivity,
3.High apparent porosity,
4.Good thermal shock resistance,
5.Great high-temperature mechanical strength,
6.High-temperature stable volume change,
7.Strong acid slag erosion resistance.
Application of Light Weight Silica Insulation Brick
Lightweight silica brick is mainly used to preserve heat in the glass industry, iron&steel industry, and ceramic furnaces. The main applications are the low-temperature parts such as blast furnaces and hot blast furnaces, waste incinerators, and glass melting furnaces.
Light Weight Silica Insulation Brick Description
| Items | QG-1.0 | QG-1.1 | QG-1.15 | QG-1.2 | Items |
| SiO2 % | ≥91 | ≥91 | ≥91 | ≥91 | SiO2 % |
| Bulk Density g/cm3 | ≥1.00 | ≥1.10 | ≥1.15 | ≥1.20 | Bulk Density g/cm3 |
| Cold Crushing Strength MPa | ≥2.0 | ≥3.0 | ≥5.0 | ≥5.0 | Cold Crushing Strength MPa |
| 0.1Mpa Refractoriness Under Load °C | ≥1400 | ≥1420 | ≥1500 | ≥1520 | 0.1Mpa Refractoriness Under Load °C |
| Reheating Linear Change (%) 1450°C×2h | 0~+0.5 | 0~+0.5 | 0~+0.5 | 0~+0.5 | Reheating Linear Change (%) 1450°C×2h |
| 20-1000°C Thermal Expansion Coefficient ×10-6℃-1 | 1.3 | 1.3 | 1.3 | 1.3 | 20-1000°C Thermal Expansion Coefficient ×10-6℃-1 |
| Thermal Conductivity (W/(m·K) 350°C±10℃ | ≤0.55 | ≤0.6 | ≤0.65 | ≤0.7 | Thermal Conductivity (W/(m·K) 350°C±10℃ |