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Light high alumina brick

Light high alumina brick, also called high alumina insulating bricks, it’s made of superior bauxite chamotte, combing with a small quantity of clay, by series of processes, and finlly calcinating under high tempreture 1400℃~1500℃.

Bulk density 1.4~1.35g/cm3, apparent porosity 66%~73%, cold crushing strength, superior thermal shock resistance.

 

light high alumina brick specification:

index light-weight high alumina brick

light-weight mullite brick 

with low Fe2O3 and high strength

AL2O3%   ≥ 48 65 65
Fe2O3%  ≤ 2.5 2.5 1 1
linear change after heating%(14000C×2h) ±0.2 ±0.2 ±0.2 ±0.2
cold crushing strength MPa ≥ 1.5 3.5 4 5
bulk density g/cm3    ≥ 0.8 1 0.8 1

 

Application: It’s widely used for the linings and insulating layers of industry kilns, and the areas without strong erosion and souring action by molten materials at high tempreture. The surface contact tempreture can not exceed 1400℃ if burning in fire directly.

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