Refractory Brick

Definition - What does Refractory Brick mean?

Refractory brick is a ceramic material that is normally used in high temperature environments because of its lack of flammability and because it is a decent insulator, which reduces the amount of energy loss. Refractory brick is typically comprised of aluminum oxides and silica.

Refractory brick is also known as firebrick.

Corrosionpedia explains Refractory Brick

Refractory brick is frequently used to construct kilns, furnaces and other high temperature enclosures. The refractory brick reduces heat loss and the chance of an unintended fire. The composition of the refractory brick will determine what temperatures it can withstand. Some types of refractory brick are able to withstand temperatures of over 2,100°C (3,600°F). However, bricks heated above these temperatures will typically begin to melt.

Refractory brick is formed by a variety of brick-making processes. Soft-mud casting, hot-pressing, and dry-pressing are all processes that can be used to make refractory brick. Depending on the material of the refractory brick, some processes will work better than others. Refractory brick is typically formed into rectangular shapes that measure 9 inches long by 4 inches wide (22.8 cm by 10.1 cm), and a thicknesses between 1 to 3 inches (2.5 cm to 7.6 cm).

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