The Magical Performance of Fused Silica Bricks in Different High-Temperature Scenarios

In the high-temperature industrial sector, refractory materials play a crucial role. Among them, fused silica bricks stand out with their remarkable performance. These high-purity, corrosion-resistant refractory bricks are suitable for the upper walls of kilns and the construction of low-alkali borosilicate glass.

Physical Properties of Fused Silica Bricks at High Temperatures

Fused silica bricks possess a series of excellent physical properties at high temperatures. They have high viscosity, which allows them to maintain their shape and structure under extreme heat. Their high strength enables them to withstand significant mechanical stress. For example, under a pressure of up to 50 MPa at high temperatures, they show minimal deformation. The anti-slag property is also outstanding, with a slag penetration rate of less than 5% after long - term exposure to high - temperature slag. Moreover, they have good anti - impact performance, being able to resist impact energy of up to 20 J without cracking.

In addition, fused silica bricks have a low thermal conductivity, typically around 1.0 - 1.5 W/(m·K) at high temperatures. This low thermal conductivity helps in reducing heat loss, saving energy in high - temperature processes. Their drying and firing shrinkage are also very small, usually less than 1%, ensuring dimensional stability during production and use.

Advantages of Fused Silica Bricks Compared to Common Refractory Materials

When compared with common refractory materials such as alumina bricks and magnesia bricks, fused silica bricks have distinct advantages. As shown in the following table:

Practical Application Cases

In a glass manufacturing plant, after replacing the original refractory bricks with fused silica bricks on the upper wall of the kiln, the service life of the kiln was extended from 2 years to 3.5 years. This not only reduced the frequency of kiln maintenance but also significantly increased production efficiency. In another high - temperature furnace for metal smelting, the use of fused silica bricks led to a 15% reduction in energy consumption due to their low thermal conductivity.

Production Process and Quality Control at Sunrise Factory

Sunrise Factory has a strict production process for fused silica bricks. They start with high - quality raw materials, carefully select and purify them to ensure high purity. During the production process, advanced molding and firing techniques are used. The firing temperature is precisely controlled within the range of 1600 - 1700°C for a specific period to ensure the formation of the desired crystal structure. Quality control is carried out at every stage, from raw material inspection to the final product testing. Each batch of products undergoes multiple tests, including physical property tests, chemical composition analysis, and microstructure examination.

If you are interested in learning more about fused silica bricks and their excellent performance in high - temperature scenarios, or if you have any questions regarding our products, please feel free to contact us. Our professional team is ready to provide you with detailed information and solutions.