我厂2.5～3吨/时冲天炉原来使用白泥修出铁口,一般能开炉50～60批料,时间达6～7小时左右,再延长时间就易出毛病,出铁口损坏时跑铁水相当严重。生产球铁时,跑铁水导致球化不良,也使工人劳动强度加大,工作环境恶劣。后来我们采用高铝粉代替白泥搪修出铁口,杜绝了由于耐火材料不顶用引起的出铁口损 I plant 2.5 ~ 3 tons / hour cupola original use of white mud repair iron mouth, the general can open 50 to 60 batches of material, the time of 6 to 7 hours or so, and then extend the time prone to failure, the taphole damage run Hot metal is quite serious. When producing ductile iron, running hot metal leads to poor spheroidization and also increases labor intensity and harsh working conditions. Later, we use high-aluminum powder to replace the lime mud trowels, to eliminate the refractory material is not the top of the taphole damage