How Raw Material Proportioning Elevates Corrosion Resistance in Electrofused AZS Refractories

In the high-temperature environment of glass melting furnaces, refractory materials face relentless chemical and thermal stress. Traditional AZS (Alumina-Zirconia-Silica) bricks often suffer from rapid crystallization at contact zones with molten glass—leading to premature failure and unplanned downtime. But what if you could significantly extend service life by optimizing just one key factor: raw material composition?

The Critical Role of Na₂O Reduction in Glass Phase Stability

Our proprietary process for producing TY-AZS36D begins with selecting ultra-high-purity alumina, zirconia, and silica—with strict control over alkali content. By reducing total Na₂O + K₂O levels from typical industry standards (~0.8%) down to 0.3–0.5%, we achieve a denser, more stable glass phase structure. This isn’t just theory—it’s been validated through SEM analysis showing up to 40% fewer microcracks after thermal cycling tests at 1500°C.

From Lab to Furnace: A Step-by-Step Breakdown

• Raw Material Screening: Only materials with Al₂O₃ > 99.5% purity are used—ensuring minimal impurities that can form low-melting phases.
• Proportional Mixing: Advanced gravimetric blending ensures uniform distribution of ZrO₂ (typically 36 wt%) for optimal resistance to glass infiltration.
• Electric Melting & Casting: Controlled atmosphere (low-oxygen) prevents re-oxidation, preserving the reduced Na₂O level throughout the melt.
• Controlled Cooling: Slow cooling rates (~5°C/hour) minimize internal stresses—critical for preventing spalling during temperature fluctuations.

This systematic approach doesn't just improve lab results—it translates directly into real-world performance. For example, customers using our TY-AZS36D report average窑炉寿命延长 18–25% compared to standard-grade bricks, especially in regenerative chambers where thermal shock is most severe.

We’ve spent over 30 years refining this technology—not just for compliance, but for excellence. Whether it's managing sudden temperature shifts or maintaining consistent kiln atmospheres, our engineers provide actionable guidance based on field data from hundreds of installations worldwide.

Why Choose Us? Because Quality Isn’t Optional—It’s Expected.

When your furnace runs 24/7, even small improvements in refractory performance translate into big savings. That’s why we say it plainly: Choose us, and you’ll never be disappointed.