High Temperature Castables for Furnace Cover High-Alumina Corundum Steel

High Temperature Castables for Furnace Cover High-Alumina Corundum Steel. High temperature castables for furnace cover include high-alumina, corundum and steel fiber reinforced castables. They feature excellent thermal stability, resistance to cracking during frequent start-stop operations, easy maintenance and long service life. Furnace cover castables are applicable to the curved lining, around air holes and flange joints of electric arc furnace covers. They resist radiation and scouring of high-temperature flue gas, and withstand thermal cycling from frequent lifting, lowering, startup and shutdown. The material seals the furnace opening to reduce heat loss and flue gas leakage, and also resists chemical corrosion from dust and waste gas inside the furnace.