Fireproof stone, or refractory brick is a material of refractory material with elements of Alumina and silica which are used to coat the furnace, kiln (combustion), and other fire chambers. Fireproof bricks are built primarily to withstand high temperatures, but must also have low thermal conductivity to save energy. Fireproof brick is a material that is able to maintain its strength at high temperatures until it is above 1,000 degrees F. Fireproof materials are generally used in layers for furnaces, kilns, incenerators and reactors.
