... kind is called electro-fused magnesia bricks.Sintered magnesia brick take magnesia brick as raw material, after ingredients, crushing, mixing, ... brick produced by adding proper chemical bond, then mixing, forming and drying.Mainly used in ceramic frit furnace, sodium silicate ... Bulk density,g/cm32.882.93.0——3.03.1Applicationsodium silicate furnace,ceramic frit furnace ,glass furnace,coking furnace, ...