Project Description


Silica Brick refractory materials are acidic. Has good acid resistance to erosion, its good thermal conductivity, high load softening temperature, generally above 1620 ℃, lower than its refractories temperature 70 ~ 80 ℃.

The thermal conductivity of Silica Brick as the operating temperature increasing, there is no residual shrinkage. In the baking process boilers, silica brick volume increases with increasing temperature.

Therefore, the silica brick of coke oven is the ideal refractory products

Now the important parts of the large and medium sized of coke oven (such as combustion chamber, ramps and heat accumulation chamber) use the silica brick masonry.


  • Coke oven
  • Steel – making furnace
  • Glass melting furnace
  • Ceramic firing furnace
  • Hot blast stove
  • Acid flat furnace top

Technical Data

SiO2 %≥94≥95≥96≥96
Fe2O3 %≤1.5≤1.5≤0.8≤0.7
Al2O3+TiO2+R2O %≤1.0≤0.5≤0.7
Refractoriness ℃1710171017101710
Apparent Porosity %≤22≤21≤21≤21
Bulk Density g/cm3≥1.8≥1.8≥1.8≥1.8
True Density,g/cm3≤2.38≤2.38≤2.34≤2.34
Cold Crushing Strength Mpa≥24.5≥29.4≥35≥35
0.2Mpa Refractoriness Under Load T0.6 ℃≥1630≥1650≥1680≥1680
Permanent Linear Change On Reheating(%)1500℃X2h0~+0.30~+0.30~+0.30~+0.3
20-1000℃ Thermal Expansich10-6/℃
Thermal Conductivity (W/MK) 1000℃1.741.741.441.44

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