High Alumina Bricks are produced with selected bauxite as main raw material, fired at 1450-1470 °C by
advanced process with strict quality control. High Alumina bricks have great features like high temperature
performance, great corrosion and wear resistance, high bulk density, low iron content, etc.
Features and advantages:
1. The dimensions are more exactly.
2. Low iron content and impurities
3. Good thermal stability;
4. High refractoriness,
5. anti alkaline /acid erosions,
6. Mechanical and chemical properties are very good.
7. Strong thermal shock resistance.
Application:
They were widely used in all parts of furnace lining of metallurgic, petroleum, construction materials, machinery
and militaries, etc.
Physical & Chemical Index:
|
Item
|
High Alumina Brick
|
|
Al2O3
|
≥48
|
≥55
|
≥65
|
≥75
|
|
Refractoriness ºC
|
≥1750
|
≥1770
|
≥1790
|
≥1790
|
|
Refractoriness under load ºC
|
≥1420
|
≥1470
|
≥1500
|
≥1520
|
|
Permanent liner change%
|
0--0.2
|
0.1--0.4(1500ºC×2h)
|
|
Apparent Porosity %
|
≤22
|
≤22
|
≤23
|
≤23
|
|
Cold crushing strength Mpa
|
≥39.2
|
≥44.1
|
≥49.0
|
≥53.9
|
|
Bulk Density g/cm3
|
2.25-2.6g/cm3
|
