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How to Choose Refractory Materials for the Bottom of the Molten Pool? A Detailed Explanation of the Alkali Erosion Resistance of High-Density Zirconia Bricks

2025-10-06
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How to choose the right refractory materials for the bottom of the molten pool? This article delves into the core advantages of high-density zirconia bricks in alkali-free glass furnaces, including their outstanding resistance to alkali glass erosion, excellent high-temperature creep resistance, and high flexural strength. It aims to assist you in making scientific material selections, extending furnace lifespan, and enhancing glass quality and production efficiency. By combining real application cases with data comparisons, it addresses industry pain points and provides actionable technical decision-making references for glass manufacturing enterprises.
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Addressing Key Challenges in Alkali - Free Glass Furnaces

In the glass manufacturing industry, alkali - free glass furnaces are facing several critical challenges. One of the primary issues is glass erosion. According to industry data, approximately 30% of furnace failures are directly related to the erosion of refractory materials by the glass melt. This erosion not only shortens the lifespan of the furnace but also affects the quality of the glass produced. Another challenge is the structural instability of the furnace. High - temperature environments can cause the refractory materials to deform over time, leading to potential safety hazards and production disruptions.

Comparison of furnace conditions before and after using high - density zircon bricks

Core Features of High - Density Zircon Bricks

Alkali Erosion Resistance

High - density zircon bricks have excellent resistance to alkali glass erosion. Laboratory tests show that in an environment with a high concentration of alkaline substances, the erosion rate of high - density zircon bricks is less than 5% per year, while ordinary refractory materials may have an erosion rate of up to 20%. This outstanding performance ensures the long - term stability of the furnace lining.

High - Temperature Creep Resistance

In high - temperature glass melting processes, high - density zircon bricks exhibit remarkable high - temperature creep resistance. At a temperature of 1500°C, the creep rate of high - density zircon bricks is as low as 0.1% after 100 hours, which helps maintain the structural integrity of the furnace and reduces the risk of deformation.

High Flexural Strength

The high flexural strength of high - density zircon bricks is another significant advantage. With a flexural strength of over 50 MPa, these bricks can withstand the mechanical stress during the furnace operation, ensuring the overall stability of the furnace structure.

Application in Key Areas

When it comes to the critical parts of the furnace such as the bottom of the melting pool and the fore - hearth, high - density zircon bricks show excellent performance. In a melting pool bottom paved with high - density zircon bricks, the service life can be extended by up to 5 years compared to traditional refractory materials. This not only reduces the frequency of furnace repairs but also improves the overall production efficiency.

Installation of high - density zircon bricks in the furnace

Data Support and Customer Testimonials

Indicators Before Using High - Density Zircon Bricks After Using High - Density Zircon Bricks
Furnace Service Life 3 - 5 years 8 - 10 years
Glass Defect Rate 5% 1%
Production Efficiency 80% 95%

"Since we started using high - density zircon bricks in our furnaces, we have seen a significant improvement in both the quality of our glass products and the overall production efficiency. The reduction in maintenance costs has also been remarkable." - A leading glass manufacturing company

The Value of High - Density Zircon Bricks

High - density zircon bricks are not just ordinary refractory materials. They are the cornerstone of furnace stability, ensuring a longer service life for the furnace. By reducing the glass defect rate, they contribute to the improvement of glass quality. Moreover, the increase in production efficiency means more output with the same amount of resources. In a word, high - density zircon bricks bring tangible benefits to glass manufacturing enterprises, making them an ideal choice for furnace construction and renovation.

High - density zircon bricks in the furnace environment

Let every high - density zircon brick be the cornerstone of your furnace stability. Don't just focus on fire - resistance; choose a material that guarantees efficiency. Discover more about high - density zircon bricks now!

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