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Fused Cast AZS And The Service Life Of Glass Furnaces

Fused cast AZS block is the essential refractory material used in the demanding areas of glass furnaces. Its can affect the quality and production of glass and the service life of the glass furnaces. 
Fused Cast AZS And The Service Life Of Glass Furnaces
Fused cast AZS block is generally used in the high temperature areas of glass furnaces, such as the crown, breast wall, superstructure, working pool side wall, paving blocks, feeder channels, and tank bottoms. Those areas are featured with high temperature, flame erosion, alkali vapor corrosion and high temperature glass melt corrosion and thermal shock. 
 
With the development of glass industry and the increasing demand for high quality glass and special glass, how to improve the quality of fused cast AZS and prolong the service life of glass furnaces has become more and more important. 
 
There are some ways to improve the quality of AZS and the service life of glass furnaces. 
 
1)Improve the stability of chemical composition of fused cast
The chemical composition of AZS is one of the key factors that determine the crystal structure and the properties. It is important to select high quality raw materials and improve the purity of the raw materials. It is crucial to control the content of each chemical composition and reduce the content of impurities. 
 
2)Adopt advanced technology and equipment
Fused cast AZS is made by melting pure and relatively fine grain raw materials in an electric arc furnace. Next the melt is poured into sand or graphite molds and cooled to white solids. Finally the cast product is processed with machines to achieve the final product of desired shape. Every step is important and has its strict operation parameters. Advanced equipment and digital testing and controlling methods have been used to improve its quality. 
 
3)Control the size and shape accurately
The accuracy of the size and shape is important for the accuracy of the structure of the glass furnaces. If the size and shape of AZS block is not accurate, the glass furnace may tilt and the gaps between the bricks may be too big. Those will cause severe corrosion during the preheating and finally pollute the glass and reduce the service life of glass furnaces. 
 
Generally, the quality of AZS block is one of the crucial factors that determine the service life of glass furnaces, since it is the most widely used refractory used in the glass contact and superstructure of glass furnaces. 

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