Refractory fire bricks
Firebricks are the most common form of dense refractories. They are usually made from hydrated aluminium silicates and small amounts of pother elements.
Firebricks/refractory bricks are one of our main refractory material used mainly in steel mills, boiler houses,lining furnaces, kilns, ovens,fireboxes,fireplaces and other related applications
We have two types of fire bricks:
- 40% Alumina Fire Brick- Service Temp. of up to 1300 degrees
- 70% Alumina Fire Bricks – Service Temp. of up to 1750 degrees
Our firebricks measure 230mm by 115mm by 75mm and are bauxite based.
Usually dense bricks are used in applications with extreme mechanical, chemical, or thermal stresses, such as the inside of a wood-fired kiln or a furnace, which is subject to abrasion from wood, fluxing from ash or slag, and high temperatures. Dense refractory bricks have a high thermal mass which is sometimes a useful property in that they will retain heat eg in a pizza oven after the fire has been taken out. Refractory bricks usually contain 30-40% alumina and the primary raw material is usually chamotte with other materials. The maximum service temperature increases with increasing alumina content and kiln bricks can be obtained with an alumina content of 80% and above.