Low creep high alumina brick
Low creep high alumina brick is a kind of high alumina refractory brick. Because of its low creep rate, it is also called low creep high alumina brick, which is used in high temperature industrial kiln under long-term high temperature environment. Compared with the ordinary high alumina brick is used high quality bauxite, with kyanite, andalusite, sillimanite these high-end "three stone" refractory raw materials fired, three stone components can be completed in the firing process of two mullite crystal change, and finally form a stable mullite phase, so that it has a very good creep resistance. Products according to physical and chemical indicators can be divided into DRL-155, DRL-150, DRL-145, DRL-140, DRL-135, DRL-130 six brands.
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Details Introduction
Low creep high alumina brick is a kind of high alumina refractory brick. Because of its low creep rate, it is also called low creep high alumina brick, which is used in high temperature industrial kiln under long-term high temperature environment. Compared with the ordinary high alumina brick is used high quality bauxite, with kyanite, andalusite, sillimanite these high-end "three stone" refractory raw materials fired, three stone components can be completed in the firing process of two mullite crystal change, and finally form a stable mullite phase, so that it has a very good creep resistance. Products according to physical and chemical indicators can be divided into DRL-155, DRL-150, DRL-145, DRL-140, DRL-135, DRL-130 six brands.
|
Performance |
Item Objective |
Indicators |
|
Chemical composition (%) |
Al2O3 |
≥75 |
|
Fe2O3 |
≤1.5 |
|
|
things Li Sex Can |
Percent porosity (%) |
≤20 |
|
Bulk density (g/cm3) |
≥ 2.75 |
|
|
Normal temperature compressive strength (MPa) |
≥80 |
|
|
0.2MPa load softening temperature T0.6(℃) |
≥ 1500 |
|
|
Thermal vibration stability (times) |
|
|
|
Reburning line change%(1400 ℃× 2h) |
-0.2～0.2 |
Key words:
Low creep high alumina brick
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