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Silica brick 96A
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Product Introduction
Product Details
Production method:
Glass kiln silica brick is one of the key refractory materials of glass furnace, which has high refractoriness, load softening temperature and high temperature volume stability. It is a refractory material made of quartz sand as the main raw material, adding appropriate amount of clay or other binding agents, and through molding, firing and other processes.
Silica bricks can maintain good structural strength and stability at high temperatures, have a long service life, have strong corrosion resistance to acidic furnace gas and molten glass, and have good thermal conductivity, which can reduce heat loss. Improve the thermal efficiency of the furnace. Silica bricks are widely used in the key parts of glass furnaces: furnace roof arch, flue arch,
The preparation process of glass kiln silica brick includes the selection of high-quality quartz sand, clay, feldspar and so on as the main raw materials to ensure the stability of the chemical composition of the raw materials and less impurities. After crushing, screening, iron removal, washing and other pretreatments, the raw materials are accurately weighed according to the product formula, and the raw materials are mixed evenly by stirring and other methods. After granulation, the mixed raw materials are put into a mold to apply pressure to make it into a silica brick green body of the desired shape. The green body is then dried to remove moisture and prevent deformation and cracking during firing. Finally, the dried green body is put into a high-temperature kiln for firing, so that the material in the green body is burned off, and at the same time, the minerals in the silica brick undergo phase change and crystallization, forming a stable silicate structure, and improving the strength and refractory properties of the silica brick.
The density, apparent porosity, room temperature pressure strength, load softening temperature and other indicators of silicon brick are also important parameters to evaluate its performance.
Application: Silica brick can maintain good structural strength and stability at high temperature, has a long service life, has strong corrosion resistance to acidic furnace gas and molten glass, and has good thermal conductivity, which can reduce heat loss and improve the thermal efficiency of the furnace. Silica bricks are widely used in the key parts of glass furnaces: furnace top arch, flue arch.
Physical and chemical indicators:
Project/ltem | BG-96A |
SiO2(%) | ≥96 |
Fe₂O₃ (%) | ≤ 0.6 |
Melt Index (Al₂ Oalready + 2R₂ O)/Fused Index(%) | ≤ 0.5 |
Percent Porosity/Apparent Porosity(%) | ≤ 21 |
True Density/True Density(g/cm³) | ≤ 2.34 |
Normal Temperature Compressive StrengthCold Crushing Strength(MPa) | ≥40 |
Starting Temperature Of Softening Under 0.2MPa Load (T0.6,℃) | ≥ 1680 |
Heating Permanent Change Rate (%)1450 ℃× 2h | 0-0.2 |
Residual Quartz(%)/Residual Quartz(%) | ≤1.0 |
Refractoriness/Refractoriness(℃) | =1720 |
Silica brick 96A is a premium refractory material specifically designed for high-temperature applications, particularly in glass furnace crowns. This brick boasts an impressive silica content of over 96%, ensuring excellent resistance to thermal shock and chemical corrosion. Its high SiO2 content also provides superior load-bearing capacity at extreme temperatures, with a refractoriness range of 1580°C to 1770°C under load.
One of the standout features of Silica Brick 96A is its low porosity, which significantly enhances its durability and longevity in harsh environments. The brick's composition includes minimal impurities, with Al2O3+2(K2O+Na2O) content less than 0.5% and Fe2O3 content below 0.8%, contributing to its high purity and performance. Additionally, the brick exhibits a true specific gravity of 2.34 kg/dm³, making it both lightweight and robust.
Silica Brick 96A is produced using advanced manufacturing techniques, including crashing, screening, mixing, pressing, drying, and sintering. This meticulous process ensures consistent quality and performance, making it a reliable choice for various industrial applications. The brick's design allows it to maintain structural integrity even after repeated thermal cycles, preventing shrinkage and maintaining dimensional stability.
Due to its exceptional heat resistance and mechanical strength, Silica Brick 96A is widely used in glass melting furnaces, coke ovens, hot blast stoves, and other high-temperature environments. It offers excellent acid slag resistance and good heat conductivity, further enhancing its suitability for demanding industrial processes.
In summary, Silica Brick 96A stands out as a top-tier refractory brick, combining high silica content, low porosity, and superior thermal properties to deliver outstanding performance in extreme conditions.
Keywords:
Silica brick 96A
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