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Refractory Bricks High Alumina Bricks Alumina Fire Bricks For Steel Melting Furnace And Kiln
Description of High Alumina Refractory Bricks High Alumina Fire Bricks For Steel Melting Furnace And Kiln
High alumina refractory brick is made of high-quality high-alumina bauxite clinker as the main raw material, mixed with additives such as bonded clay, and fired at high temperature after molding.
Item | Fire Clay Brick | High Alumina Bricks | ||||||
SK-30 | SK-32 | SK-34 | SK-35 | SK-36 | SK-37 | SK-38 | SK-40 | |
Al2O3, % (≥)(%) | 30 | 38 | 45 | 55 | 65 | 70 | 75 | 80 |
Fe2O3(≤)(%) | 2.5 | 2.5 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
Refractoriness (SK) | 30 | 32 | 34 | 35 | 36 | 37 | 38 | 40 |
Apparent Porosity (%) | 22-26 | 20-24 | 20-22 | 18-20 | 20-23 | 20-23 | 20-22 | 18-20 |
Bulk Density (g/cm3) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
Cold Crushing Strength, Mpa (≥) | 20 | 25 | 30 | 40 | 45 | 50 | 60 | 70 |