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Refractory Bricks Used In Blast Furnace

Refractory Bricks Used In Blast Furnace

What Kind of Refractory Bricks Used In Blast Furnace?

TypesCastablesIntroduction
Type 1Alumina Silicon Carbide Brick
Type 2Si3N4 Bonded SiC Brick
Type 3High Grade High Purity Corundum Brick
Type 4Corundum Brick
Type 5Mullite Corundum Brick
Type 6Chrome Corundum Brick

Type 1:Alumina Silicon Carbide Brick

The product has good anti-scour, anti-slag corrosion, high softening temperature under load and good thermal shock stability, and is suitable for hot metal ladle, torpedo tank and so on.

Type 2:Si3N4 Bonded SiC Brick

Silicon nitride bonded silicon carbide brick is made by using high purity SiC as aggregate, adding additives such as silicon powder, and firing in nitriding furnace according to the theory of original production. The product has the advantages of high strength, good wear resistance at high temperature, high thermal conductivity, small thermal expansion coefficient, good thermal shock stability, especially its excellent oxidation resistance, alkali resistance and CO erosion resistance.

Type 3:High Grade High Purity Corundum Brick

Mainly used in steel,electronics,petrochemical, nonferrous, refractory and other industries kiln key parts

ITEMUNITHigh Grade High Purity Corundum Brick
Chemical ComponentsAI2O399
 SiO2 0.2
 Fe2O3 0.2
Bulk densityg/cm33.2
Apparent porosity19
Cold Crushing StrengthMpa100
refractoriness under load(0.2Mpa 0.6%)°C1700

Type 4:Corundum Brick

Mainly used in steel,electronics,petrochemical, nonferrous, refractory and other industries kiln key parts

ITEMUNITHigh Grade High Purity Corundum Brick
Chemical ComponentsAI2O399
 SiO2 0.2
 Fe2O3 0.2
Bulk densityg/cm33.2
Apparent porosity19
Cold Crushing StrengthMpa100
refractoriness under load(0.2Mpa 0.6%)°C1700

Type 5:Mullite Corundum Brick

Mainly used in steel,electronics,petrochemical, nonferrous, refractory and other industries kiln key parts

ITEMUNITMullite Corundum Brick
Chemical ComponentsAI2O380
 SiO2 18
 Fe2O3 0.3
Bulk densityg/cm32.8
Apparent porosity18
Cold Crushing StrengthMpa100
refractoriness under load(0.2Mpa 0.6%)°C1700

Type 6:Chrome Corundum Brick

High chromium brick is mainly used in coal chemical industry, chemical industry kiln, non-alkali fiber glass, waste incinerator and other key parts of the kiln, chromium corundum brick is mainly used in carbon black furnace, copper smelting furnace lining, glass furnace melting pool, steel rolling heating furnace slide, steel platform

ITEMUNITChrome Corundum BrickChrome Corundum BrickChrome Corundum Brick
Chemical ComponentsCr2O3603012
 AI2O3 386880
 Fe2O3 0.20.20.5
Apparent porosityg/cm3141618
Bulk density3.633.533.3
Cold Crushing StrengthMpa130130120
refractoriness under load(0.2Mpa 0.6%)°C170017001700
linear change on reheating(1600°C×3h)±0.2±0.2±0.2
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