• Low Creep High Alumina Brick
  • Low Creep High Alumina Brick
  • Low Creep High Alumina Brick
  • Low Creep High Alumina Brick
  • Low Creep High Alumina Brick

Low Creep High Alumina Brick for Hot-blast Stove

  • Al2O3 :75
  • Apparent Porosity %:20
  • Compress strength, Mpa ≥:60
  • Creep rate, % (0.2Mpa,50h)   :1550℃ 0.8
  • Linear Change after reheating %:1550℃,2h
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  • Technical Data
  • Inquiry
Low creep high alumina brick for blast furnace is made of corundum, mullite “sillimanite, andalusite and kyanite” and high quality bauxite clinker as raw material by shaping at high pressure and sintering at high temperature.
Characteristic:
1.The content of AL2O3 is ≥48%.
2.High refractoriness. The temperature is up to 1750~1790℃, it belongs to High-duty Refractory.
3.High refractoriness under load. The URL is higher than fireclay brick as the high content of Al2O3, however, it is lower than silica brick because of mullite crystal does not form reticular tissue. 4.Excellent slag resistance. High alumina brick is a kind of neutral refractory material so it enjoys excellent resistance to acid slag and alkali slag corrosion.
Application: The main markets for low creep high alumina brick are building lining of hot-blast stove, blast furnace, coke oven, rotary kilns of cement and so on.


Item DRL-155 DRL-150 DRL-145 DRL-140 DRL-135 DRL-130 DRL-127
Al2O3 % 75 75 65 65 65 60 50
Apparent Porosity % 20 21 21 22 22 22 23
Bulk Density g/cm3 2.65 2.65 2.5 2.4 2.35 2.3 2.3
Cold Crushing Strength MPa 60 60 60 55 55 55 50
Creeping Rate % 0.8 0.8 0.8 0.8 0.8 0.8 0.8
Permanent Change on Heating, 1550℃*2h 0.1-0.2 0.1-0.2 0.1-0.2 -- -- -- --
Permanent Change on Heating, 1450℃*2h -- -- -- 0.1-0.2 0.1-0.4 0.1-0.4 0.1-0.4
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