Loading Port:Shanghai
Payment Terms:TT OR LC
Min Order Qty:1 m.t.
Supply Capability:111 m.t./month
1high alumina refractory brick
2More than 20 years experience manufacture
3ISO9000&CE
4Clients:Alcoa,RioTintoGroup,RUSAL
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
ITEM | INDEX | ||
SiC % | 72 Min | ||
Si3N4 % | 21 Min | ||
Fe2O3 % | 0.5 Max | ||
Porosity % | 18 Max | ||
Bulk density g/cm3 | 2.65-2.70 | ||
Bending strength MPa | Room temperature °C | 42 | |
1400 °C | 45 | ||
CCS MPa | 150 Min | ||
Thermal conductivity w/m·k 1250 °C | 15-18 | ||
Tolerance | 0-100 mm | ±1.0 | |
101-300 mm | ±1.5 | ||
301-500 mm | ±2.0 | ||
More than 500 mm | ±0.5% | ||
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.
