In the glass industry, the quality of refractory materials is of great significance for improving the quality of glass products, saving fuel, extending the lifespan of the glass furnace, and reducing the cost of glass production. Refractory materials are the material basis of glass furnaces. They have a great impact on the overall benefits of furnaces, and must be selected reasonably. The working conditions of different parts of the glass furnace are different, and the performance of refractory materials is also different. The basic requirements for refractory materials for glass furnaces are roughly as follows:

► Must have high refractoriness;

► No pollution or minimal pollution to glass liquid;

► Extend the service life as much as possible;

► There is no contact reaction between refractory materials of different materials at high temperatures;

► Precise style and size, as little dosage and heat loss as possible;

►Use high-quality materials for vulnerable parts and general materials for other parts.

However, glass furnace leakage accidents occur frequently, which bring huge economic losses to glass manufacturers. There are many reasons for glass furnace leakage accidents, including the aging of the furnace, the operation of workers, the design structure and process operation, and the quality of the fused cast AZS blocks. As a high-performance refractory material, fused cast AZS blocks are most widely used in the glass manufacturing industry, especially in the key parts of glass furnaces. This article will analyze the reasons for glass furnace leakage from the perspective of fused cast AZS blocks.

I Classification and current status of fused cast AZS blocks

II Causes and measures for leakage from bottom of glass furnace

I Classification and current status of fused cast AZS blocks

Fused cast zirconium corundum refractory products (Fused cast AZS blocks) are divided into three categories according to their nominal mass fraction of zirconium oxide:

Fused cast zirconium corundum refractory products (Fused cast AZS blocks) are divided into four types according to the casting method: