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Low-iron high-alumina heat-insulating brick

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Product Description

  product Overview:

 

  Low-iron high-alumina heat-insulating brick is a product made by mixing and stirring alumina powder, poly-light ball and binder in a certain ratio, extruding, and firing at high temperature. Mainly used for industrial furnace insulation, energy saving and consumption reduction.

 

  Physical and chemical indicators:

 

Item Indicator
DLG160-1.0L DLG150-0.8L DLG140-0.7L DLG135-0.6L
Al2O3        %      ≥ 60 55 50 50
Fe2O3        %      ≤ 1.0 1.0 1.0 1.0
Bulk Density      g/cm³         ≤ 1.0 0.8 0.7 0.6
Compressive strength at room temperature    Mpa        ≥ 3.0 2.5 2.0 1.5
Heating permanent line change       %         ≤ 1600℃×12h
-1.0~0.5
1500℃×12h
-1.0~0.5
1400℃×12h
-1.0~0.5
1350℃×12h
-2.0~1.0
Thermal Conductivity【W/(m·K)】average temperature(350±25)℃      ≤ 0.50 0.35 0.30 0.25

 

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