Light Weight Silica Insulation Brick Introduce
Light Weight Silica Insulation Brick Silica in more than 91%, the bulk density of 1.2 g / cm3 below the light refractory. Refractoriness and load softening temperature and composition of the same ordinary silica brick or less. Has a good thermal shock resistance. Light weight silica brick is classifed in group 30 by ASTM standards.which is also known as siliceous silica insulating brick over 91%, volume density under 1.2 g/cm3 lightweight refractory materials Refractoriness and refractoriness under load and the composition of the same common silica brick But due to the porosity, so the compression strength of resistance to slag corrosion resistance than ordinary silica brick, such as the thermal shock resistance are improved.
Application of Light Weight Silica Insulation Brick
Light weight silica brick is mainly used to preserve heat in glass industry, iron&steel industry and ceramic furnace.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 Technical Data
| Item |
QG-0.8 |
QG-1.0 |
QG-1.1 |
QG-1.15 |
QG-1.2 |
| SiO2 % |
≥88 |
≥91 |
≥91 |
≥91 |
≥91 |
| Bulk Density g/cm3 |
≤0.85 |
≤1.00 |
≤1.10 |
≤1.15 |
≤1.20 |
| Cold Crushing Strength Mpa |
≥1.0 |
≥2.0 |
≥3.0 |
≥5.0 |
≥5.0 |
| 0.2Mpa Refractoriness Under Load T0.6 °C |
≥1400 |
≥1420 |
≥1460 |
≥1500 |
≥1520 |
| Permanent Linear Change On Reheating(%)1450°CX2h |
0~+0.5 |
0~+0.5 |
0~+0.5 |
0~+0.5 |
0~+0.5 |
| 20-1000°C Thermal Expansich10-6/°C |
1.3 |
1.3 |
1.3 |
1.3 |
1.3 |
| Thermal Conductivity (W/MK) 350°C |
0.55 |
0.55 |
0.6 |
0.65 |
0.7 |
