These are the insulation bricks used for the purpose of heat insulating to cover the materials that are applied up to 1000 degree C. These are often mistaken as the rear insulation materials and the bricks are assigned to the group of lightweight refractory bricks being manufactured on the basis of the naturally occurring light weight raw materials.
The insulation bricks manufacturers make their best try to provide with these classic insulation bricks and help the insulation bricks suppliers sell them at best prices. These insulation bricks are a class of bricks that consists of highly porous fire clay or that of kaolin.
The complete formulation is light in weight, low in thermal conductivity and is sufficiently resistant to the temperature which is used successfully on the hot side of the furnace walls permitting the thin walls of low thermal conductivity and low heat content.
As per the insulation bricks manufacturers, these are the ones which work even with being low heat content and that is an important aspect of saving fuel and even time on hearing up with permitting rapid changes in temperature and even permits with rapid cooling.
These are characterized by a large amount of porosity in it and these pores are believed to be closed. The presence of porosity decreases the thermal conductivity of the insulating bricks. The insulating bricks suppliers need to note these points and explain that to the customers who buy these bricks from them.
When it comes to the color of these bricks, that generally varies from light brown to white and these refractory air is considered to be the best insulation and that is considered to be the excellent source with insulating properties. The body of the bricks is made up of tiny air spaces which exactly look like a honeycomb effect.