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Kerui - Silica Refractory Brick
Silica refractory brick is an acidic refractory material. The SiO2 content reaches above 94%. This refractory brick has good high-temperature resistance. This kind of bricks are used in kilns. Kerui Refractory has more than 20-year experience of manufacturing and exporting. We offers a wide range of bricks to partners.
- SiO2: ≥94-96%;
- Bulk Density: 2.34-2.35g/cm³;
- Refractoriness Under Load: 1640-1660ºC;
- Refractory Degree: 1690~1730ºC;
- Cold Crushing Strength: 25-35 MPa;
- Cold Crushing Strength: 25-35 MPa;
- Standard size: 230*114*65mm and other sizes.
- Silica Bricks Price: The greater the quantity is, the greater the discount is.
High-quality Components of Silica Refractory Bricks
Kerui silica refractory brick is a refractory brick with high-quality silicon dioxide as the main component. This type of brick is made from natural silica stone as raw material. It adds a suitable amount of mineralizer and is fired at 1350-1430ºC.
After firing, the mineral composition of the silicon bricks changes. It mainly consists of cristobalite, tridymite, residual quartz, diopside, glass phase, and so on. The mineralizer (lime milk) promotes the formation of the scale quartz phase. Therefore, bricks have spots on them.
Other Shapes of Silica Bricks
In addition to standard straight bricks, we also offer bricks in a variety of shapes, including special-shaped bricks, checkered bricks, ax bricks, anchor bricks, composite bricks, universal arc bricks, curved bricks, and so on.
High Temperature Stability
The high load softening temperature of silicon brick reaches 1640-1670ºC. The stability of volume change ensures that it maintains its structural integrity and performance under extreme high-temperature conditions.
Acid Slag Erosion Resistance
The acid resistance and slag erosion resistance of silicon brick protect it from chemical corrosion in environments with acidic or corrosive substances, for example, CaO?FeO?Fe2O3, and other oxides. It is different from mag carbon bricks.
Low Thermal Conductivity
The low thermal conductivity of silicon brick helps maintain consistent temperatures within the structure. The silica refractory brick properties can improve energy efficiency and overall performance while also resisting thermal shock.
High Gas Tightness
The high gas tightness of silicon brick helps maintain the required atmosphere within the structure. It ensures efficient operation and excellent performance of industrial kilns. This is crucial for safety and efficiency in high-temperature and high-pressure kiln environments.
Note: 1. Silicon bricks are not suitable for alkaline working environments. They are easily damaged by oxides containing Al2O3, K2O, and Na2O.
2. They are not suitable for working in environments below 800 degrees Celsius because of poor earthquake resistance. Below 800 degrees Celsius, the furnace needs to be slowly heated and cooled.
Glass Furnace
A large number of silicon bricks are commonly used in the construction of glass furnace arches, glass melting pots, glass furnace walls, and kiln roofs. Its application in glass furnaces offers the following advantages: strong resistance to acid slag erosion, strong thermal shock resistance, stable volume at high temperatures, and so on.
Coke Oven
In coke ovens, silicon bricks are typically used in carbonization chambers, combustion chambers, walls, heat storage chambers, and chutes, among others. Silicon bricks provide certain irreplaceable advantages for continuous production coke ovens, such as high load softening temperature, strong thermal shock resistance, low thermal conductivity, strong resistance to acid slag erosion, and so on.
Hot Blast Stove
Silicon bricks are commonly used in the walls and arches of hot blast stoves. This is because silicon bricks can maintain stable volume at high temperatures in hot blast stoves. They resist the erosion of acidic substances and maintain consistent temperature with the furnace interior. They are an ideal choice for maintaining the integrity of hot blast stove structures.
Acid Steelmaking Converter
A large number of silicon bricks are used in the heat storage chamber and slag chamber of acid steelmaking converters. Due to their excellent acid resistance and high load softening temperature, silicon bricks can maintain stable structure and performance in acid steelmaking converters, helping equipment to operate stably over the long term.