Fire Resistant High Alumina Brick Refractory Brick

High Alumina Brick

Laurel high alumina bricks are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. It features excellent high temperature mechanics and chemical corrosion resistance.

Parameter

Item	HA60	HA70	HA75	HA80
AL2O3(%)	≥60	≥70	≥75	≥80
SIO2(%)	32	22	20	≥18
Fe2O3(%)	≤2.5	≤2.0	≤1.8	≤1.8
Refractoriness °C	≥1750	≥1770	≥1780	≥1790
Bulk density,g/cm3	2.3	2.45-2.5	2.5-2.55	2.55-2.6
Softening temperature under load	≥1450	≥1510	≥1520	≥1530
Apparent  porosity,%	≤24	≤23	≤22	≤21
Cold Crushing strength Mpa	≥45	≥50	≥54	≥60

 

Applications

High alumina brick is widely used for Widely used in blast furnaces, Hot Blast Stove,Steel ladle lining, Reheating furnace, Cement kiln, Tunnel kiln,boiler, coke oven, carbon furnace, glass kiln , Steel smelting furnace and various kiln lining and thermotechnical equipment, etc.

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