... frit furnace, sodium silicate furnace, glass melting furnace regenerator, steeling furnace, bottom and wall of electric furnace, permanent lining of oxygen converter, non-ferrous metal smelting furnace ... density,g/cm32.882.93.0——3.03.1Applicationsodium silicate furnace,ceramic frit furnace ,glass furnace,coking furnace, metallurgical furnace and other furnaces