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.
High Alumina bricks are extensively used in mining, metallurgy, cement, chemical and refinery industries. These bricks are also used in all kinds of industrial furnace and high temperature areas to prolong the lives of furnaces.
High alumina bricks for general uses are mainly made from super quality Bauxite, bonding chamotte and additives, being high pressure pressed and sintered in high temperature.
High alumina bricks for general uses are mainly made from super quality Bauxite, bonding chamotte and additives, being high pressure pressed and sintered in high temperature.
Application:
They were widely used in all parts of furnace lining of metallurgic, petroleum, construction materials, machinery and militaries, 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.
Physical and 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 |
|||
Packing of alumina brick:
Standard export wooden pallet with PET strap fixed, paper or non-woven fabrics between layers finally wrapped with plastic shrink film from outside.
Shipping: By vessel or train from any Chinese port
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