Kaiyuan Refractories

A professional company produces and sales refractory materials for industry of cement, iron & steel ,non- ferrous metal and glass etc.
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Silica insulating fireproof brick

Silica Insulation Bricks are produced with silica through adding inflammable substances such as coke, anthracite coal, sawdust, and carbonized rice husk, or foaming agents to form porous structure. Generally add 35-45% anthracite coal or 30% coke as inflammable substances. Since there are Fe2O3 and Al2O3 in the ash of coke and anthracite coal, there is no need to add iron scales. Silica Insulation Brick's main mineral composition includes 78%~86% tridymite, 13%~15% cristobalite and 4%~7% quartz. Its cold crushing strength is 2.0-5.9MPa, thermal conductivity is 0.35-0.42W/(m•K) and density is 0.9-1.1g/cm3.
  • KY-1.1


  • 6902200000


Product Description

Silica Insulation Bricks

SiO2 %≥88≥91≥91≥91≥91
Bulk Density g/cm3≤0.85≤1.00≤1.10≤1.15≤1.20
Cold Crushing Strength  Mpa≥1.0≥2.0≥3.0≥5.0≥5.0
Thermal Conductivity (W/MK) 350ºC0.550.550.600.650.70
Permanent Linear Change On Reheating (%)  1450ºC*2h0~+0.50~+0.50~+0.50~+0.50~+0.5
0.2Mpa Refractoriness Under Load T0.6ºC≥1400≥1420≥1460≥1500≥1520
20~1000ºC Thermal Expansion 10.6/ºC1.


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Zhengzhou Kaiyuan Refractories Co.,Ltd

 Plant add: Tancunwan village, Niudian town, Xinmi city, Henan, China
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