Introduction
It is mainly made of ceramic fiber and formed through a double-sided needle punching technology. used for thermal insulation of and sealing of furnace door and top cover, etc.
Ceramic fiber blanket is through high temperature melting of raw materials jet or spin into fiber, and made by double-sided needling process.The interlacing degree, anti-layering performance, tensile strength and surface smoothness improved .it contains no organic binder and has good manufacturability and stability in high and low temperature.
Physicochemical indexes
type | standard | High alumina | Zr |
P.L.C（%） | 1000℃×24h≤-4 | 1200℃×24h≤-4 | 1350℃×24h≤-4 |
Thermal conductivity（500℃）W/(m.k) | ≤0.153 | ≤0.153 | ≤0.153 |
shot content（φ≥0.202） （%） | ≤15 | ≤15 | ≤15 |
Tensile Strength（thickness 25mm） (Mpa) | ≥0.04 | ≥0.04 | ≥0.04 |
Bulk density （Kg/m3） | 96/128 | 96/128 | 96/128 |
Al2O3 | ≥43 | 51-53 |
|
Al2O3+SiO2 | ≥96 | ≥99 |
|
Al2O3+SiO2+ZrO2 |
|
| ≥99 |
ZrO2 |
|
| ≥15 |
Fe2O3 | ＜0.5 | ≤0.3 |
|
Na2O+k2O+Fe2O3 | ＜0.9 | ＜0.9 | ＜0.9 |
Features
- Uniform diameter, long fiber and low shot content
- Low thermal conductivity, low thermal capacity
- Good Toughness and tensile strength
- thermal stability, thermal shock resistance
Advantages
- Not contains any organic binder, good thermal stability and chemical stability, nonflammable
- Low thermal conductivity, low thermal capacity, slow down heat transfer
- Excellent sound insulation and mechanical strength
- Good elastic fiber,low shrinkage, good tensile strength and rebound resilience
- Easy to cut and install
Application
Used in industrial furnace lining, lining materials, high temperature insulation materials, etc.