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REFRACTORY HIGH ALUMINA BRICK
High Alumina bricks are produced with selected bauxite chamotte by advanced process and strict quality control.The main mineral components are corundum and mullite phases. It features excellent high temperature mechanics and chemical corrosion resistance.
Features:
Good eroding resistance
Low iron content.
Great bulk density
Typical Applications:
Steel furnace
Glass kilns
Ceramic tunnel kiln
Iron making furnace
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Classification |
HA 60 |
HA 70 |
HA 75 |
HA 80 |
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Refractoriness(SK/°C） |
1790 |
1800 |
1830 |
1850 |
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Bulk Density |
2.3 |
2.45 |
2.50 |
2.55 |
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Refractoriness under load 0.2Mpa,(°C) |
＞1450 |
＞1510 |
＞1530 |
＞1550 |
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Porosity (%) |
22 |
＜22 |
＜21 |
20 |
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Cold crushing strength(Mpa) |
≥45 |
≥50 |
≥54 |
≥60 |
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Chemical Composition (%) |
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|
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Al2O3 |
≥60 |
≥70 |
≥75 |
≥80 |
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Fe2O3 |
32 |
22 |
20 |
≥18 |
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Al2O3 |
≤1.7 |
≤2 |
≤1.8 |
≤1.8 |
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Fe2O3 |
＜2.3 |
＜2 |
＜1.2 |
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