Refractory is specific to direct-fired rotary kilns, insulating and protecting the shell of the drum from high internal temperatures; they also function to maintain heat retention.
Many types of refractory exist, with the most common options being brick or castable. Brick is typically used for abrasive material processing, because it is more wear resistant. While castable and brick are comparable in price for similar refractory compositions, the installation cost of brick is higher because it is more labor intensive. In general, the refractory selection is dependent on the kiln temperature, material chemistry, and how abrasive the material is.
For more information on refractory, or other rotary kiln components, download our e-book, or contact a FEECO expert today!
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