What is a potential consequence of temperature changes in the furnace?

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Spalling refers to the cracking and flaking of materials, particularly in furnaces where temperature changes occur rapidly. When the temperature inside a furnace fluctuates significantly, the materials, typically refractory linings, can expand and contract unevenly. This thermal stress can lead to spalling, which compromises the structural integrity of the refractory material and can result in operational issues within the furnace.

Understanding spalling is crucial for maintaining furnace efficiency and longevity, as it can lead to increased maintenance costs and potential downtime if not addressed promptly. Other potential consequences, such as reduced emissions or enhanced heat retention, may not directly result from temperature changes in the same damaging way as spalling does. Increased efficiency is also not typically associated with temperature fluctuations; instead, it often depends on stable operating conditions. Thus, recognizing the risk of spalling is essential for proper furnace management and performance.

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