冲天炉出铁口的“冻结”,不仅给操作增加困难,而且给铁水质量带来一系列的不良影响。因此防止出铁口“冻结”是每个大炉工所期望的。开炉伊始,经过桥流入前炉的是低温铁水,又由于凉的前炉更使铁水温度降低,传统的修炉方式是把前炉底修成向出铁口处倾斜约1:20的坡,这样,低 The “freezing” of the cupola taphole not only adds difficulty to the operation but also brings about a series of adverse effects on the quality of the molten iron. Therefore, preventing the taphole from “freezing” is what every big-hearted worker desires. At the beginning of the blast furnace, the low temperature hot metal flows through the bridge into the forehearth, and the cold forehearth reduces the temperature of the hot metal. The traditional way of repairing the furnace is to modify the front bottom into a slope of about 1:20 toward the taphole, This way, low