high alumina refractory brick made in China

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Product Description:


1high alumina refractory brick 
2More than 20 years experience manufacture 

high alumina refractory brick made in China

High strength

Low thermal expansion coefficient

Good thermal conductivity and thermal shock resistance

Good resistance to liquid aluminum erosion capability

High erosion


2. Applications of high alumina refractory brick

Widely used in large aluminum electrolytic cell of lining material. In the electrolytic aluminium industry, because of nitride bonded silicon carbide products can be made thin wall lining, enlarge the tank capacity, improve the thermal conductivity, can rapid cooling, and they are permitted to enter a higher power, increase the tank production capacity, at the same time, in its surface can form alumina and cryolite of eutectic content, in order to protect the tank lining work layer, prolong service life, therefore, this product is aluminum industry generally welcome. 


3. Physical and Chemical Index of high alumina refractory brick 



SiC %

72 Min

Si3N4 %

21 Min

Fe2O3 % 

0.5 Max

Porosity %

18 Max

Bulk density g/cm3


Bending strength MPa

Room temperature °C


1400 °C



150 Min

Thermal conductivity w/m·k 1250 °C



0-100 mm


101-300 mm


301-500 mm


More than 500 mm


Surface irregularity

0.2 Max

Face verticality

0.5 Max

Diagonal difference

2 Max




4. Production process of high alumina refractory brick

a.) Choose metal silicon as raw material, add additives, then mix.

b.) Put the mixture into the mold, then make embryoid by machine pressing. 

c.) Be reaction sintered by nitrogen protection in electric furnace. 


5. Packing details of high alumina refractory brick

a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.

b.) We also pack products as custom request.

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