1. Low bulk density 2. Many types and many working temp 3. Many size as per need 4. High mechanical strength ... quickly.The anchor installed inside,excellent safety. ApplicationsSteel industry:types of furnaces including heating furnaces, heat treatment furnaces ladle ... type kilns, end-fired furnaces,tunnel kilns and other types of ceramic furnaces,kiln cars,kiln doors.Petrochemical industry:cracking ...