High alumina brick
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Description
High alumina bricks
High alumina bricks are made from bauxite of super quality, bonding chamotte and additives. The main Al203 content is 48%-80%. The advantages of high alumina bricks are high refractoriness, anti alkaline/acid erosions, good strength under high temperature and good thermal shock resistance. High alumina bricks were widely accepted in thermal equipment of metallurgy, petroleum, chemical industry, construction materials, machinery and militaries etc.
| Item | Index | ||||
| LZ-75 | LZ-65 | LZ-55 | LZ-48 | ||
| Al2O3 ,%≥ | 75 | 65 | 55 | 48 | |
| Refractoriness ℃< | 1790 | 1770 | 1750 | ||
| 0.2Mpa refractoriness under load ℃< | 1520 | 1500 | 1470 | 1420 | |
| Linear
change After reheating % |
1500℃,2h | +0.1
-0.4 |
- | ||
| 1450℃,2h | - | +0.1
-0.4 |
|||
| Apparent porosity, %≤ | 23 | 22 | |||
| Compress strength, Mpa≥ | 53.9 | 49.0 | 44.1 | 39.2 | |
High alumina bricks are packed on wooden pallet and then polyethylene film is placed over it; finally the package is tied up with steel strips.Our high alumina bricks 's minimum quantity is 20 t.
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High alumina brick