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Silica Refractory Fire Brick
Features
1.Good thermal conductivity
2.High refractoriness under load
3.Good creep resistance
4.Refractoriness can be up to 1700℃
Applications
Silica brick is made of quartz stone material, the content of SiO2 is above 94%. It has good acid slag resistance and good heat conductivity. The refractoriness is 1690~1710 °C.Refractoriness under load temperature is beyond 1620°C.
SiO2 has different types of crystals in different temperatures and the transform between the crystals will cause the change of the bulk. So there is a close contact between the changes of SiO2 crystals and the produce, performance and usage of silica bricks. During the heating, there will be changes of the bulk and cristobalite changes most, then quartz, phosphorus quartz is the slowest of all and it also has good heat-conductivity.Coke oven should use the silica brick with small true density. And the phosphorus quartz is better than others.
Silica brick is mainly used to build the doghouse crown, suspended wall of channel, regenerator chamber, top crown
and inlet sealing of glass furnaces. It's also widely used in coke oven, hot blast furnace. In metallurgy industry,
it is adopted as the nozzle brick.
Physical properties and chemical composition
Item |
BG-94 |
BG-95 |
BG-96A |
BG-96B |
|
Chemical composition |
SiO2 |
≥94 |
≥95 |
≥96 |
≥96 |
Fe2O3 |
≤1.5 |
≤1.5 |
≤0.8 |
≤0.7 |
|
Al2O3+TiO2+R2O |
|
≤1.0 |
≤0.5 |
≤0.7 |
|
Refractoriness °C |
1710 |
1710 |
1710 |
1710 |
|
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 °C |
≥1630 |
≥1650 |
≥1680 |
≥1680 |
|
|
Permanent Linear Change On Reheating (%)1500°CX2h |
0~+0.3 |
0~+0.3 |
0~+0.3 |
0~+0.3 |
|
20-1000°C Thermal Expansich10-6/°C |
1.25 |
1.25 |
1.25 |
1.25 |
|
Thermal Conductivity (W/MK) 1000°C |
1.74 |
1.74 |
1.44 |
1.44 |
|
Trading Process
1.We offer free of charge samples.
2..We give suggestions to customers according to your specific requirement to extend the service life of your kiln and save money for you.
3.We pay much attention to the production procedures and testing.
4.We offer good after-sale service.
Brief Introduction of Sunrise
Zhengzhou Sunrise Refractory Co., Ltd.is an integrated company of production and technology development.
We are mainly engaged in the research and development of refractory materials.Our business mainly involves
in production of fused cast AZS 33, 36, 41, fused cast α-β alumina, fused cast high zirconia block,
fused cast skid rail block, glass mould brick, yttrium stabilized zirconia brick, magnesia series brick, zircon brick, zircon mullite brick, mullite brick, sillimanite brick, fused corundum brick, high chrome brick
series brick, chrome corundum brick, chrome AZS block, silicon carbide brick,silica brick, fireclay series
brick, high alumina series brick, insulation series brick, fiber products, magnesium silicon insulation board, etc.
Our products are widely used in industries of glass, petrochemistry, metallurgy, sapphire crystal furnace, building materials, etc. The products of our company are sold in markets of Europe, America, Middle East, Korea and Southeast Asia. We have established business and cooperation relationship with many customers
in different countries and regions.Our company has passed ISO9001:2000 Quality Management Systems Certification.
Contact Us
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