Fire clay insulating brick is made of high purity fire clay, by adding combustible, gas evolution method, or foam method.Fireclay insulating brick is a kind of porous material with Al2O3 content 30-46%. Its refractoriness is 1580-1750 ¡ãC, refractoriness under load is 1250-1450 ¡ãC, with good thermal resistance and strong ability to resistant acid slag.The bulk density is 0.75-1.2g/cm3, crushing strength is 2.0-5.9MPa, thermal conductivity is 0.221-0.442W/(m.K) (1350¡ãC)
1.Low levels of iron and other impurities
2.High refractoriness,but can not contact with the flame directly
3.High porosity, low volume density, low thermal conductivity
4.Good heat insulating effect and energy-efficient
5.Good thermal shock stability.
6.Corrosion and erosion resistance
7.Long service life
Fire clay insulating brick can not be in direct contact with the flame,this insulating brick can be used as inner lining brick of industry kilns wall and industry furnance.such as blast furnace, hot blast stoves ,electric arc furnace,cement kiln,melting furnace,ignition furnace,flue,refining equipment,heating equipment and piping, regeneration device, gas furnace,soaking furnace,annealing furnace,heat reaction chamber and other thermal industrial equipment.