Application Case Study of Zero Expansion Silica Bricks in Glass Furnace and Coke Oven Hot Repairs

2025-05-02

Sunrise

Customer Cases

This article focuses on the application cases of zero expansion silica bricks in hot repairs for glass furnaces and coke ovens. It begins by discussing the current status and pain points in the furnace repair industry, introducing zero expansion silica bricks. These bricks, primarily made from fused quartz, offer advantages such as excellent thermal shock resistance, high strength, and low expansion rates. The article explains these benefits using scientific principles and data. It then showcases the application scenarios of zero expansion silica bricks in glass furnaces and coke ovens, illustrating their advantages such as on-the-fly repairs during furnace operation and the elimination of expansion joints. A comparison with traditional repair materials highlights their superior performance. Customer feedback is included to demonstrate the product's effectiveness. The article concludes by summarizing the advantages of zero expansion silica bricks, encouraging readers to learn more and consider this high-quality solution for furnace repairs.

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Application Case Sharing of Zero Expansion Silica Bricks in Glass Furnace and Coke Oven Hot Repair

In the kiln hot repair industry, there are long - standing pain points. Traditional repair materials often have problems such as poor thermal shock resistance, high expansion rates, and short service lives. These issues lead to frequent shutdowns for kiln repairs, which not only increases production costs but also reduces production efficiency. Against this backdrop, zero expansion silica bricks have emerged as a promising solution.

Superior Characteristics of Zero Expansion Silica Bricks

Zero expansion silica bricks are mainly made of fused quartz. This unique raw material endows them with excellent performance. In terms of thermal shock resistance, tests have shown that they can withstand temperature changes of up to 800°C without cracking, which is far superior to traditional silica bricks that can only withstand about 300 - 400°C.

The strength of zero expansion silica bricks is also remarkable. With a compressive strength of up to 50 MPa, they can better withstand the mechanical stress inside the kiln. Moreover, their low expansion rate is a key advantage. The linear expansion rate is less than 0.1% in the temperature range of 20 - 1000°C, while traditional bricks may have an expansion rate of 1 - 2% in the same temperature range. In addition, they have good acid corrosion resistance, which can effectively resist the erosion of acidic gases and molten substances in the kiln.

Application Cases in Glass Furnaces and Coke Ovens

Glass Furnace: In a large - scale glass manufacturing plant, the traditional hot - repair materials in the glass furnace needed to be replaced every 6 months. After using zero expansion silica bricks, the repair interval has been extended to 2 years. The bricks can be repaired during the operation of the glass furnace, without the need to shut down the furnace. As shown in the following picture, the zero expansion silica bricks are firmly in place and well - integrated with the furnace structure.

Zero expansion silica bricks in glass furnace

Coke Oven: A coke plant used zero expansion silica bricks for hot repair. Traditional materials required pre - heating and the construction process was complicated. However, zero expansion silica bricks can be directly installed without pre - heating. The installation time has been reduced from 5 days to 2 days, greatly improving the hot - repair efficiency. The following picture shows the application of zero expansion silica bricks in the coke oven, which effectively improves the stability and durability of the coke oven.

Zero expansion silica bricks in coke oven

Comparison with Traditional Hot - Repair Materials

Performance Index	Zero Expansion Silica Bricks	Traditional Hot - Repair Materials
Thermal Shock Resistance	Withstand 800°C temperature change	Withstand 300 - 400°C temperature change
Expansion Rate	Less than 0.1% (20 - 1000°C)	1 - 2% (20 - 1000°C)
Installation Time	Shorter, can be directly installed	Longer, need pre - heating

Customer Feedback

"Since using zero expansion silica bricks in our glass furnace, we have significantly reduced the maintenance cost and improved the production efficiency. The durability of the furnace has also been greatly enhanced." - A glass manufacturing enterprise.

"The zero expansion silica bricks in our coke oven have saved us a lot of time and labor. The hot - repair process has become much simpler and more efficient." - A coke plant.

Conclusion and CTA

Zero expansion silica bricks have many advantages, such as excellent thermal shock resistance, low expansion rate, high strength, and good acid corrosion resistance. They can improve the hot - repair efficiency, stability, and durability of glass furnaces and coke ovens. If you are looking for high - quality solutions for kiln hot repair, we strongly encourage you to further understand and try using zero expansion silica bricks. Contact us now to explore how these bricks can revolutionize your kiln maintenance process!