Brief Introduction
Alkali-resistance brick is a kind of low alumina brick, the Al2O3 content is 30-25%, the main material is low alumina refractory clay, it is a kind of silica-alumina series refractory products with good alkali erosion resistance performance in cement kiln system.
Application
1. Preheater equipment
2. Metallurgy furnace
3. Transfer zone of cement rotary kiln
4. Burning zone of cement rotary kiln
5. Other thermal equipment
Technical Datas
| Items | Ordinary Type | High-strength type | Insulation type | Vault type |
| Al2O3 % | 25-30 | 25-30 | 25-30 | 30-35 |
| Fe2O3 % | 2 | 2 | 2 | 2 |
| SiO2 % | 65-70 | 65-70 | 60-70 | 60-65 |
| Refractoriness (°C) | 1650 | 1650 | 1650 | 1710 |
| Bulk Density g/cm3 ≥ | 2.15 | 2.25 | 1.65 | 2.2 |
| Apparent Porosity % ≤ | 21 | 20 | 35 | 21 |
| Cold Crushing Strength MPa≥ | 35 | 60 | 15 | 35 |
| Refractoriness Under Load °C ≥ | 1350 | 1300 | 1250 | 1400 |
| thermal conductivity W/m. (350°C±10°C)TC | 1.28 | 1.28 | 0.7 | 1.28 |
| Application | Large and medium dry-process kiln,decomposing furnace, etc. | |||
