The common ones are made of hard chamotte clay, which are meltdown in resistance furnacesand processed by blowing or swinging technology. The high purity and high aluminum ones are made of composite materials of pure alumina and silica powder, which are meltdown in resistance furnaces and processed by blowing or swinging technology.
Zirconium ones are made of composite materials of high purity alumina, silica powder and zircon sands, which are meltdown in resistance furnaces and processed by blowing or swinging technology.
Typical Application
Raw materials of fiber Paper and vacuum forming products;
Raw materials of fiber coating materials;
Raw materials of fiber cast able and coatings;
High-temperature furnace heating equipment wall lining fillings;
Raw materials of fiber textile products
Type | Common | Standard | High Purity | High-aluminium | Zirconium | |
Classification temperature (°C) | 1100 | 1260 | 1260 | 1360 | 1430 | |
Working Temperature (°C) | <1000 | 1050 | 1100 | 1200 | 1350 | |
Color | white | white | white | white | white | |
Fiber diameter (um) | Blown | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 |
Needled | 3-4.5 | 3-4.5 | 3-4.5 | 3-4.0 | 3-4.0 | |
Chemical composition (%) | AL2O3 | 44 | 46 | 47-49 | 52-55 | 39-40 |
AL2O3+SIO2 | 96 | 96 | 99 | 99 | - | |
AL2O3+SIO2+ZrO2 | - | - | - | - | 99 | |
ZrO2 | - | - | - | - | 15-17 | |
Fe2O3 | <1.2 | <1.0 | 0.2 | 0.2 | 0.2 | |
Na2O+K2O | ≤0.5 | ≤0.5 | 0.2 | 0.2 | 0.2 | |
