alumina cement
Main introduction of the High alumina bricks
High alumina brick, also known as high alumina fire bricks or high alumina refractory bricks, refers to fire brick containing Al2O3 more than 48%, which is made of high grade bauxite through high temperature calcinations. High alumina brick is a kind of neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion. It has characteristic of high refractoriness under load, which decide high alumina brick is a n ideal material for various kinds of industrial furnace. It is widely used in building lining of hot-blast stove, blast furnace, coke oven, rotary kilns of cement and so on.
High alumina bricks properties:
Technical Index for High alumina Bricks
|
Index |
Item |
||||
|
LZ-70 |
LZ-65 |
LZ-55 |
LZ-48 |
||
|
Al2O3,%≥ |
70 |
65 |
55 |
48 |
|
|
Refractoriness,℃≤ |
1790 |
1770 |
1750 |
||
|
1520 |
1500 |
1470 |
1420 |
||
|
Reheatinglinearchange,% |
1500℃,2h |
|
- |
||
|
1450℃,2h |
- |
|
|||
|
Apparentporosity,%≤ |
23 |
22 |
|||
|
Compressstrength,MPa≥ |
49 |
||||
Applications of High alumina bricks
Building materials for blast furnace
Building materials for hot-blast stove
Building materials for coke oven
Building materials for steel making furnace
For steel ladle
High alumina bricks packing
High Alumina Bricks are packed on wooden pallet and then polyethylene film is placed over them, finally the package is tied up with steel strips.
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