Brief Introduction
Curved refractory brick contains Al2O3 about 30% ~ 45%, and silica content is lower than 78%. Curved refractory block belongs to the weak acid refractory materials, and it is resistant to acid slag and the erosion of acid gases, but the alkali resistance ability is a bit poor. curved refractory blocks have the characters of good thermal performance and good thermal shock resistance.
Technical Datas
| Curved Firebrick | |||
| Index | 40 – 45% AluminaFireclay Brick | 30 – 35% AluminaFireclay Brick | |
| Item | Unit | 1600°C | 1500°C |
| Bulk Density | g/cm³ | 2.2 | 2.1 |
| Apparent Porosity | % | 22 | 24 |
| Modulus of Rupture | kg/cm² | 90 | 80 |
| Cold Crushing Strength | kg/cm² | 300 | 250 |
| Linear Expansion 1350°C | % | 0.2 | 0.2 |
| Refractoriness Under Load | °C | 1450 | 1300 |
Application
Curved firebrick is mainly used for the insulating lining of hot surfaces or backing heat-insulating layers of other refractory materials. the refractory linings or heat-insulating materials of the industries, such as ethylene pyrolysis furnaces, tubular furnaces, reforming furnaces of synthetic ammonia, gas generators and high- temperature shullte kilns,etc.
