... Fireclay bricks are made from clinker clay by mixing, forming, drying, sintering and machining. The Al2O3 content ranges from 36% to ... heat or backup insulation layer in all kinds of industrial kiln or laboratory furnace.Characteristic:1,Low thermal conductivity 2, ... heater 2,Heat treatment furnace 3,Ceramic firing kiln 4,Cement rotary kiln 5,Glass melting tank 6,Backup insulationProduct Standard ...