| 摘要 |
PURPOSE:To provide a casting material having especially excellent corrosion resistance for the metal line part of the trough as a castable refractory material to be used as a liner of a blast furnace trough. CONSTITUTION:This casting material for a blast furnace trough is a compounded material essentially consisting of, by weight proportion, 5-25% silicon carbide, 1-5% carbon, 5-15% alumina superfine powder having <=5mum average particle size, 0.5-7% alumina cement, and the balance MgO-Al2O3 spinel. An azodicarbonamide is added as an org. foaming agent to the above casting material. Thereby, the obtd. material is effective to corrosion resistance of the metal line part of the blast furnace trough. |
