| 摘要 |
PURPOSE:To provide surface treated graphite providing monolithic refractory suppressing occurrence of crack, having excellent durability, etc., by further coating graphite having the surface covered with a resin with a hydrophilic surfactant having low foaming properties. CONSTITUTION:Graphite having the surface coated with a resin is produced by a method of blending graphite (e.g. scaly graphite) with a resin (e.g. pitch) and granulating. Then the surface of the graphite coated with the resin is further covered with a hydrophilic surfactant having low foaming properties to produce surface treated graphite providing monolithic refractory. 1-10wt.% of the prepared surface treated graphite is blended with 5-30wt.% silicon carbide, 1-20wt.% agalmatolite, 1-10wt.% binder and the rest of alumina and (or) alumina silica material, cast into a square frame, dried and burnt to give monolithic refractory for pretreating hot metal having excellent durability. |
