Introduction
It is made from Ceramic fiber cotton, a certain proportion of binder, and additives through the vacuum molding process.
Physicochemical indexes
ITEM | Standard type | High alumina type | Zr type |
permanent linear change on heating（%） | 1000℃×24h≤-4 | 1200℃×24h≤-4 | 1350℃×24h≤-4 |
Thermal Conductivity（500℃）W/(m.k) | ≤0.165 | ≤0.165 | ≤0.165 |
moisture content （%） | ≤1 | ≤1 | ≤1 |
organic content（%） | ≤7 | ≤7 | ≤7 |
Bulk density（Kg/m3） | 280-320 | 320 | 320 |
Al2O3 | 36-38 | 39-42 |
|
Al2O3+SiO2 | ≥96 | ≥99 |
|
Al2O3+SiO2+ZrO2 |
|
| ≥99 |
ZrO2 |
|
| ≥15 |
Fe2O3 | ＜0.5 | ≤0.3 |
|
Na2O+k2O+Fe2O3 | ＜0.9 | ＜0.9 | ＜0.9 |
Advantages
- Flat surface, uniform thickness
- Easy to cut and install,
- High temperature resistance
- Low heat rate, low shrinkage,low unit weight
Usage
Used for heat insulation and heat preservation in furnace, filter box, degassing box, launder, etc