In the research and development of amorphous thermal insulation refractory materials, it is necessary to refer to actual usage situations, so it is particularly important to accumulate data and understand the on-site conditions.
The typical lifespan of a kiln is 5 to 10 years, or even 20 years. For such a long period of time, the focus is usually on the changes in the heavy refractory materials that play a structural role. In fact, with the passage of time, the internal structure of lightweight refractory materials also changes, and the insulation effect will be reduced to varying degrees. Therefore, daily maintenance is very important. Especially in areas filled with perlite and refractory fibers in a dispersed form, it is easy for high-temperature parts of the kiln to come into direct contact with air flow, resulting in extremely rapid heat loss. Therefore, it is advisable to use fire-resistant castables with good sealing properties during construction.
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