In the realm of glass manufacturing, the selection of high - quality refractory materials is crucial for the efficient and stable operation of glass melting furnaces. Electro - fused AZS (Alumina - Zirconia - Silica) refractory materials, especially the TY - AZS36 type, have gained significant attention due to their excellent performance and ISO certification. This article serves as a professional guide for procurement officers and technical managers, aiming to help them make informed decisions when selecting electro - fused AZS refractory materials based on ISO certification standards.
Electro - fused AZS36 bricks are widely used as linings in glass melting furnaces. They are exposed to extremely high temperatures and corrosive molten glass. Common failure problems include cracking, spalling, and excessive corrosion. These failures can lead to reduced furnace efficiency, increased energy consumption, and even forced shutdowns, which will bring huge economic losses to enterprises. For example, if the refractory lining fails prematurely, the glass production line may need to be shut down for maintenance, resulting in production interruptions and increased costs.
The chemical composition of electro - fused AZS36, specifically the ratio of Al₂O₃, ZrO₂, and SiO₂, plays a vital role in its high - temperature stability and corrosion resistance. Al₂O₃ (≥49%) provides high - temperature strength and hardness. ZrO₂ (≥35.5%) enhances the material's resistance to corrosion and thermal shock. SiO₂ acts as a binder, helping to form a dense structure. A proper balance of these components ensures that the material can withstand the harsh conditions inside the glass melting furnace. For instance, a higher ZrO₂ content can significantly improve the material's ability to resist the erosion of molten glass, reducing the wear and tear of the refractory lining.
Physical indicators such as bulk density (≥3.85g/cm³) and apparent porosity (≤1%) are of great engineering significance. Bulk density reflects the compactness of the material. A higher bulk density usually means better mechanical properties and corrosion resistance. Apparent porosity can be analogized to skin pores. Just as small pores on the skin can prevent the invasion of external substances, a low apparent porosity in electro - fused AZS36 bricks can prevent the penetration of molten glass and corrosive gases, thereby improving the material's durability.
ISO certification is a symbol of the professionalism and consistency of the quality control system. It ensures that the production process of electro - fused AZS36 bricks meets international standards. Products with ISO certification have undergone strict inspections and tests, which means that their quality is more reliable. For example, ISO - certified products are more likely to maintain stable performance under different operating conditions, reducing the risk of unexpected failures.
The cold crushing strength (≥300MPa) and high - temperature corrosion rate (≤1.3mm/24h) of electro - fused AZS36 are significantly different from those of ordinary AZS bricks. A higher cold crushing strength means that the material can withstand greater pressure during installation and operation. A lower high - temperature corrosion rate indicates better corrosion resistance. By comparing these key performance indicators, procurement officers can clearly see the advantages of electro - fused AZS36 over other products. For example, in a long - term high - temperature environment, electro - fused AZS36 will have less corrosion and longer service life compared to ordinary AZS bricks.
| Product | Cold Crushing Strength (MPa) | High - temperature Corrosion Rate (mm/24h) |
|---|---|---|
| Electro - fused AZS36 | ≥300 | ≤1.3 |
| Ordinary AZS Bricks | Around 200 | Around 2.0 |
In the process of selecting electro - fused AZS refractory materials, data - driven decision - making is crucial. Procurement officers and technical managers should rely on objective data such as chemical composition, physical indicators, and performance parameters to evaluate products. They can also obtain technical information and expert support to make more scientific decisions. By choosing high - quality electro - fused AZS36 bricks, enterprises can improve the stability of furnace operation, reduce operating risks, and increase economic benefits. Electro - fused AZS36 is a reliable choice for glass manufacturers who are committed to improving production efficiency and product quality.
To learn more about high - quality electro - fused AZS refractory materials and make a wise choice for your glass melting furnace, click here.
