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Product category|Silica Brick
Bulk Density: ≤2.33g/cm3
Cold Crushing Strength: ≥45
Refractoriness Under Load: ≥1670℃
Online Time: 7*24 hours
Silica refractory bricks for glass kilns are an acidic refractory material, mainly made of mitrite, silica and a small amount of residue. The refractory raw material is natural silica sand, and its SiO2 content should be above 96%. Silica bricks have high temperature and volume stability, no pollution to glass liquid, chemical corrosion resistance, low volume density, and can reduce the weight of the furnace body.
Silicon oxide is higher than 95%
Good acid corrosion resistance
High softening point with temperature
There is no shrinkage after repeated burns
The refractoriness temperature under load is higher than 1650 ℃
Mainly 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.
| Item | Unit | Value | |||
| BG-96A | BG-96B | BG-95 | |||
| Chemical Composition(%) | SiO2 | % | ≥96.0 | ≥96.0 | ≥95.0 |
| Fe2O3 | % | ≤0.5 | ≤0.8 | ≤1.0 | |
| Al2O3+2(K2O+Na20) | % | ≤0.5 | ≤0.7 | - | |
| Bulk Density | g/cm3 | ≤2.33 | ≤2.33 | ≤2.33 | |
| Apparent Porosity | % | ≤21 | ≤22 | ≤22 | |
| Cold Crushing Strength | Mpa | ≥45 | ≥45 | ≥45 | |
| Refractoriness Under Load | T0.5 | ℃ | ≥1690 | ≥1680 | ≥1670 |
| Permanent Linear Change | 1450℃*2h | % | 0-0.2 | 0-0.2 | 0-0.2 |
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