Unveiling the Physical Properties of Fused Silica Bricks at High Temperatures

In high - temperature industries such as metallurgy, glass manufacturing, and cement production, refractory materials play a pivotal role. They are the backbone that withstands extreme heat, chemical corrosion, and mechanical stress, ensuring the smooth operation of industrial furnaces and kilns. Among these refractory materials, fused silica bricks have emerged as a remarkable choice, attracting the attention of many professionals.

Physical Properties at High Temperatures

Fused silica bricks exhibit outstanding physical properties at high temperatures. Firstly, they have high viscosity. At temperatures above 1400°C, the viscosity of fused silica bricks can reach up to 10^7 - 10^8 Pa·s, which helps them maintain their shape and structure under extreme heat, preventing excessive deformation. Secondly, their high strength is also remarkable. Tests have shown that at 1500°C, the compressive strength of fused silica bricks can exceed 50 MPa, enabling them to bear heavy loads in industrial furnaces.

These properties are based on the unique physical and chemical structure of fused silica bricks. The high - purity silica in the bricks forms a stable crystal lattice structure at high temperatures, which resists the impact of heat and external forces.

Advantages over Other Refractory Materials

When compared with other common refractory materials such as alumina bricks and magnesia bricks, fused silica bricks have several distinct advantages. A comparison table is presented below:

As shown in the table, fused silica bricks have lower thermal conductivity, which means less heat loss; lower thermal expansion coefficient, reducing the risk of cracking due to temperature changes; and excellent acid resistance, making them suitable for acid - rich industrial environments.

Real - World Application Cases

In a glass manufacturing plant, fused silica bricks were used in the melting furnace. After continuous operation for 2 years, the bricks showed only minimal wear, and the furnace maintained high - efficiency operation. In another cement kiln, the use of fused silica bricks improved the service life of the kiln lining by 30% compared with traditional refractory materials, reducing maintenance costs and downtime.

Production Process and Quality Control at Sunrise Factory

Sunrise Factory is renowned for its advanced production process and strict quality control system. The production of fused silica bricks at Sunrise starts with the selection of high - purity silica raw materials. These raw materials are then melted at extremely high temperatures in electric arc furnaces, followed by a precise molding process. During production, strict quality control is implemented at every step. From raw material inspection to final product testing, multiple quality checks ensure that each fused silica brick meets the highest standards.

If you are interested in learning more about our high - quality fused silica bricks or have any questions about their application in your industry, please feel free to contact us. Our professional team is ready to provide you with detailed information and customized solutions.