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Refractory bricks are referred to as fire bricks. A refractory material fired from refractory clay or other refractory materials. Light yellow or brownish. It is mainly used in smelting furnaces and can withstand high temperatures of 1,580 °C - 1,770 °C. A refractory material having a certain shape and size. According to the preparation process, it can be divided into fired bricks, non-burned bricks, fused bricks (melted cast bricks), and fire-resistant insulating bricks; according to the shape and size, it can be divided into standard bricks, ordinary bricks, and special bricks. It can be used as a high-temperature building material and structural material for building furnaces and various thermal equipment, and can withstand various physical and chemical changes and mechanical effects at high temperatures. For example, refractory clay bricks, high alumina bricks, silica bricks, magnesium bricks, etc
According to the different composition of refractory bricks, they can be divided into five categories: silicon-aluminum refractory bricks, alkaline series refractory bricks, carbon-containing refractory bricks, zirconium-containing refractory bricks, and heat-insulating refractory bricks. Any furnace is not built with only one type of refractory brick, and a different refractory brick is required for use.
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China refractory plant ceramic refractory bricks China silica refractory
Item | refractory sillimanite bricks | ||
Model | 65 | 60 | 55 |
Al2O3 % | ≥65 | ≥60 | ≥55 |
SiO2 % | ≤32 | ≤37 | ≤42 |
Fe2O3 % | ≤1.0 | ≤1.0 | ≤1.5 |
Bulk density g/cm3 | ≥2.5 | ≥2.3 | ≥2.3 |
Apparent Porosity % | ≤18 | ≤19 | ≤20 |
Compressive Strength in Common Temperature Mpa | ≥60 | ≥60 | ≥50 |
Softening Temperature Under Load 0.2Mpa 0.6% ℃ | ≥1650 | ≥1600 | ≥1580 |
High quality China castable refractory brick for masonry blast furnace
Aluminum Magnesia Carbon Brick | Index | |||
| LMC-A | LMC-B | LMC-C | ||
Chemical index | A12O3(%)≥ | 70 | 65 | 60 |
| MgO (%) ≥ | 13 | 12 | 13 | |
| C (%) | 6 | 6 | 6 | |
Physical index | Apparent porosity(%)≤ | 10 | 10 | 12 |
| Bulk Density(g/cm3)≥ | 3.0 | 2.95 | 2.9 | |
| Cold Crushing Strength(Mpa)≥ | 45 | 45 | 45 | |
| Applications | Used in metallurgical equipment such as molten steel tank and refining ladle. | |||
