How do you prevent falling of refractory bricks in a furnace during a thermal shock?

　　To prevent the falling of refractory bricks in a furnace during thermal shock, several measures can be taken:

　　1. Proper brick selection: Choose refractory bricks that have high thermal shock resistance. There are specialized refractory bricks designed to withstand rapid temperature changes and thermal shocks.

　　2. Anchoring system: Install an effective anchoring system to secure the refractory bricks in place. Anchors can be made of metal or ceramic materials and are used to hold the bricks together and resist movement during thermal cycling.

　　3. Expansion joints: Incorporate expansion joints in the refractory lining. These joints allow for some flexibility and movement of the bricks during thermal expansion and contraction, reducing the risk of cracking and dislocation.

　　4. Adequate curing and drying: Ensure that the refractory bricks are properly cured and dried before subjecting them to thermal shock. This process allows for the removal of excess moisture and minimizes the potential for internal stresses and cracks.

　　5. Proper installation: Follow the recommended installation procedures provided by the refractory manufacturer. This includes using appropriate mortar or jointing materials and ensuring proper alignment and tightness of the bricks.

　　6. Regular maintenance and inspection: Conduct routine inspections of the furnace lining to identify any signs of damage or deterioration. Promptly repair or replace any damaged bricks to prevent further issues.

　　It is important to note that specific preventive measures may vary depending on the type of furnace, operating conditions, and refractory material being used. Consulting with refractory experts or engineers experienced in furnace design and maintenance can provide more tailored recommendations for your specific situation.