Description For Silica Brick:
Silica brick is made of quartz stone material, the content of SiO2 is above
93%,it has good resistance to acid slag and good heat conductivity.
And the refractoriness is 1690~1710°C,RUL 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.
Application For Silica Brick:
Mainly used in the construction of regenerative chamber, chute,
combustion chamber, coking chamber, furnace roof etc. parts of the
Also be used for coke oven of coking chamber and combustion chamber
partition, steel open hearth of regenerative chamber and sediment
chamber, soaking furnace, glass melting furnace, refractory silica
brick materials and ceramic firing kiln and kiln of the vault and
other supporting parts. Also used in hot blast stove of high
temperature bearing parts and acid open hearth furnace roof.
Advantage For Silica Brick:
1) Silicon oxide is above 95%.
2) Good acid erosion resistance.
3) High softening point with temperature.
4) No shrink in burn repeatedly.
5) Temperature of refractoriness under load is above 1650º C
Stable Capability, High Quality, Excellent Service, Competitive
price is the most important advantage of our products.
Physical And Chemical Indicators:
|Item||Silica brick for coke oven||Silica brick for glass kin|
|0.2MPa RUL°C ≥||1650||1680||1670||1660||1650|
one BRICK ≥20kg
|True density g/cm3 ≤||2.34 2.35||2.34|
|PLC % 1450°C×2h||+0.2 0||/|
|AP % ≤||22(23)||24||22(24)|
|Thermal expansion 1000°C % ≤||1.28||1.30||/|
|CCS MPa ≥|