Lightweight insulation bricks are a heat insulation material with low volume density in Insulating Fire Brick Factory, high pore rate, and low thermal conductivity. The characteristics of low density and low thermal conductivity determine its irreplaceability in the application of industrial kiln, but low density but low density The low heating rate and intensity are contradictory. The national standards put forward the various performances of the light insulation bricks in Insulating Fire Brick Factory. In the standard, we see that with the decrease in different types of thermal insulation brick heat guidance coefficients, the corresponding strength is also decreased. And people always hope that there is a good intensity of the insulation brick in Insulating Fire Brick Factory while the heating coefficient is low. According to the existing standards, when the thermal conductivity is 0.13W/m · k, the fire resistance is 800-900 ° C, the line changes are 900 ° C × 8h, no more than 2%, the pressure resistance strength is 0.8MPa, the body density is 0.5 g/cm3 Essence
The amount of raw materials in the production examples is as follows: 300kg of silicon sand containing silicon dioxide greater than 96%, 10kg of lime with calcium oxide content greater than 85%, silicon fire mud in Insulating Fire Brick Factory with a silicon content of silicon, 30kg of aluminum phosphate cement, industrial aluminum for industrial aluminum, industrial aluminum for industrial aluminum for industrial aluminum, industrial aluminum for industrial aluminum, 1kg, total water use 400-500kg preparation process is as follows:
1. According to the measuring ingredients, grind each material into powder, add water to the silicon sand to make pulp and preheat, and the preheating temperature is 45-50 ° C in Insulating Fire Brick Factory;
2. Add the rest of the material to the slurry and stir. After mixing, pour the mixed slurry into the mold and heat it to 65-70 ° C for foaming. Insurance at ° C for 2 hours;
3. After static, enter the steam room and steam, the steam pressure is 1.2MPa, the steam temperature is 190 ° C, the steam time is 9 hours;
4. High temperature sintering, temperature 800 ° C.
