| Customization: | Available |
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| Application: | Metallurgy |
| Material: | Silicon Carbide (SiC) |
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Silica Refractory Brick Product Description
Silica bricks for glass furnace refers to the silicon refractory product used in the high temperature part of the glass kiln (not in contact with the glass liquid), it is a kind of acid refractory mainly made from tridymite, cristobalite and a small amount of residual quartz as well as glass phase. The raw refractory material is natural silica sand whose SiO2 content should be more than 96%. The higher SiO2 content in silica sand, the higher temperature silica bricks resist.
Glass kiln silica brick has high temperature and volume stability, no pollution to glass liquid, chemical corrosion resistance, small bulk density, and can reduce the weight of furnace body.
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.
Advantages of Silica Fire Brick:
1.The high temperature volume is stable, and the furnace body does not change due to the temperature fluctuation surface. Because the silicon brick has a high load softening temperature and a small creep rate, the glass kiln can keep the furnace body from deforming at 1600 ° C, and the structure is stable.
2.No pollution to the glass liquid. The main component of silica brick is SiO2. If it is used, if there is any drop or surface droplet, silica bricks for glass melting furnace will not affect the quality of the glass liquid.
3.Resistance to chemical attack. The superstructure silicon brick is eroded by R2O gas in the glass batch, and a smooth metamorphic layer is formed on the surface, which makes the erosion speed lower and protects.
4. The bulk density is small, which can reduce the weight of the furnace body
Silica bricks are used in the roof and superstructure of glass melting tanks as well as for hot repairs.
Rongsheng Refractory Silica Brick Technical Data
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Silica brick for coke oven |
Silica brick for glass kiln |
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Furnace bed
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others
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BG-96A
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BG-96B
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BG-95A
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BG-95B
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SiO2% ≥
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94
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96
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96
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95
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95
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Fe2O3 %≥
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/
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0.8
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1.0
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1.2
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1.2
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|
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0.2MPa RUL°C ≥
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1650
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1680
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1670
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1660
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1650
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FUSION INDES:
one BRICK<20kg one BRICK ≥20kg |
/
/
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0.5
0.6
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/
/
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0.7
0.7
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/
/
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|
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True density g/cm3 ≤
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2.34 2.35
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2.34
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||||
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PLC % 1450°C×2h
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+0.2 0
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/
|
||||
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AP % ≤
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22(23)
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24
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22(24)
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|||
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Thermal expansion
1000°C % ≤ |
1.28
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1.30
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/
|
|||
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CCS MPa ≥
one brick<20kg one brick≥20kg |
30
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25
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35(30)
30(25)
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|||
Refractory silica brick mainly used in the construction of regenerative chamber, chute, combustion chamber, coking chamber, furnace roof etc. parts of the coke ovens. Silica Brick For Glass KilnMainly 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.
Packaging : Packed by sea-worthy wooden pallet + shrink wrapped + carton
For example, Standard size of Fireclay brick : 230x114x65mmShipping : 384pcs/plt x 18plts in one 20 feet container;
RS Refractories Co., Ltd. is located in Henan, China. Our company has professional scientific and technical personnel and production team, and we have our own fully automated factories. For more than ten years, we have focused on the development and innovation of refractory materials and high-temperature furnace technology, and strive to provide customers with comprehensive, personalized and cost-effective services with high-quality products. Our products are widely used in electric power, metallurgy, petrochemical and other fields, and are exported to more than 70 countries and regions in the world such as Europe, America, Oceania, Southeast Asia, and the Middle East.
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