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We are a refractory material manufacturer, with four major factories: heavy brick factory, light brick factory, monolithic refractory factory and fused-cast brick factory.
We promise to provide you with high-quality refractory materials.
Kiln lining use alumina brick SK40 is calcined from bauxite raw material or high Al2O3 material at 1420-1530℃. Kiln lining use alumina brick SK40 contain more than 82% aluminum.
Features of kiln lining use alumina brick SK40:
- Fire resistance
The refractoriness of high alumina brick is higher than that of clay brick and semi-silicon brick, which belongs to advanced refractory materials. - Softening temperature under load
Because of high Al2O3 in high aluminum products, less impurity mass, so the load softening temperature is higher than clay brick, but because mullite crystals did not form network organization, so the load softening temperature is still not high silicon brick. - Slag resistance
High alumina brick has more Al2O3, which can resist the erosion of acid slag and alkaline slag.
Applications of kiln lining use alumina brick SK40:
Kiln lining use alumina brick SK40 is widely used in various industries such as cement, glass building materials industry, iron and steel smelting industry, petrochemical industry, etc.
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Kiln lining use alumina brick SK40 index:
Refractory Fire Bricks | SK-36 | SK-37 | SK-38 | SK-40 |
AL2O3% (≥) | 55 | 65 | 70 | 82 |
Fe2O3% (≤) | 2 | 2 | 2 | 2 |
Refractoriness(SK) | 36 | 37 | 38 | 40 |
Refractoriness underload, 0.2MPa, °C (≥) | 1450 | 1480 | 1530 | 1600 |
Apparent porosity (%) | 20-23 | 20-23 | 20-22 | 18-20 |
Bulk density (g/cm³) | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
Cold crushing strength ,MPa (≥) | 45 | 50 | 60 | 70 |