Alkali resistant brick
Alkali-resistant bricks use silica, coke stones, and the right amount of additives to improve the microstructure of the product. In the process of using and alkali oxide reaction to generate a high-viscosity glass phase, covering the surface of the brick surface pores, preventing the infiltration of alkaline slag, play the role of alkali resistance and erosion resistance.
Based on the common type of high-strength alkali-resistant bricks, it is made by adding additives to improve the compressive
Other name: Alkali resistant brick
Model Number: HCR
Certification: ISO
Minimum Order Quantity: 10
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Alkali resistance brick
Alkali resistance brick introduction
Alkali-resistant bricks use silica, coke stones, and the right amount of additives to improve the microstructure of the product. In the process of using and alkali oxide reaction to generate a high-viscosity glass phase, covering the surface of the brick surface pores, preventing the infiltration of alkaline slag, play the role of alkali resistance and erosion resistance.
Based on the common type of high-strength alkali-resistant bricks, it is made by adding additives to improve the compressive strength. The product has the characteristics of high strength, stable volume, good resistance to alkali corrosion, and is suitable for the cement kiln preheater, precalciner, tertiary air duct and other parts.
Alkali resistance brick features
1.Low thermal conductivity
2. Excellent acid and base slagging resistance
3. High refractoriness
4. Excellent thermal shock resistance
5. Excellent mechanical strength
Alkali resistance brick technical sheet
Item | Common type alkali resistance brick | High strength alkali resistance brick | Arch type alkali resistance brick | Insulation type alkali resistance brick |
Al2O3 % | 25-35 | 25-35 | 25-35 | 20-30 |
SiO2 % | 60-70 | 60-70 | 60-65 | 60-67 |
AP % | 25 | 20 | 25 | 30 |
CCS (0.2 Mpa) Mpa | 25 | 60 | 30 | 20 |
RUL °C | 1350 | 1300 | 1400 | 1200 |
Thermal shock resistance (1100°C water quenching cycle) | 10 | 5 | 10 | 5 |
Thermal condutivity (350°C W/mk) | 1.3 | 1.4 | 1.3 | 0.75 |
Thermal expansion rate (900°C) % | 0.7 | - | - | 0.6 |
Alkali resistance brick application
Alkali resistance brick widely be used in preheater, tertiary air duct of cement rotary kiln.
