Insulating fire brick, in abbreviation form, is known as IFB. It sometimes can also be called as soft brick, because they have relatively soft textures. Large insulating fire brick is a type of refractory material and is famous for its high porosity, low bulk density as well as low thermal conductivity. Therefore, large insulating fire bricks have outstanding properties compared with other refractory bricks, which results in their wide range of applications. What are the special uses of large insulating fire bricks? Where can insulating fire bricks be used? This passage may give you some ideas about these questions.