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.
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.
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 |
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