Light Weight Silica Brick

Light Weight Silica Brick is with silica content m…

Composition: SiO2>=92% Refractoriness: 1790℃

Type: QG-1.1

Refractoriness: 1790℃

Application: glass kiln insulation layers

Capacity:80 tons/ton

Package: wooden pallet

Product Overview

Light Weight Silica Brick is with silica content more than 91%, the bulk density of 1.2 g / cm3. It is made of crystal silica as raw material by adding into compound flammable substance.


  • low thermal conductivity
  • high temperature resistance
  • good thermal shock resistance
  •  energy-saving materials of furnaces


Light weight silica brick is mainly used to preserve heat in glass industry, iron&steel industry and ceramic furnace.The main applications are the low temperature parts such as blast furnaces and hot blast furnaces, waste incinerators and glass melting furnaces.


Item QG-1.0 QG -1.1 QG-1.15 QG -1.2
SiO2  % ≥91 ≥91 ≥91 ≥91
Bulk Density g/cm3 ≤1.00 ≤1.10 ≤1.15 ≤1.20
Cold Crushing Strength Mpa ≥2.0 ≥3.0 ≥5.0 ≥5.0
0.2Mpa Refractoriness Under Load T0.6  °C ≥1400 ≥1420 ≥1500 ≥1520
Reheating Linear Change ratio, %/1450°CX2h 0~+0.5 0~+0.5 0~+0.5 0~+0.5
Thermal Conductivity (W/MK) 350°C 0.55 0.6 0.65 0.7


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