Refractory bricks, often simply called firebricks, are refractory materials produced by firing fireclay or other refractory raw materials. They are typically pale yellow or brownish in color. Primarily used for lining smelting furnaces, they can withstand high temperatures ranging from 1,580°C to 1,770°C. They are refractory materials manufactured to specific shapes and dimensions.
They can be classified by manufacturing process into fired bricks, unfired bricks, electro-fused (or fused-cast) bricks, and refractory insulation bricks; they can also be categorized by shape and size into standard bricks, common bricks, and special-shaped bricks. They serve as high-temperature construction and structural materials for kilns and various thermal processing equipment, capable of withstanding various physical, chemical, and mechanical stresses at high temperatures. Examples include fireclay bricks, high-alumina bricks, silica bricks, and magnesia bricks.
