冲天炉熔炼中,前炉出铁口是控制出铁流量的通道,它的使用质量好坏直接影响着熔炼的顺利进行。我厂前炉出铁口修筑材料原是用石英砂、耐火泥、石墨粉等配制的,在修炉操作和熔炼过程中存在如下问题: 1。配制时,比例与干湿掌握不好,影响出铁口使用质量; Cupola smelting furnace front tapping hole is to control the flow of iron out of the channel, the quality of its use of a direct impact on the smooth progress of the melting. I plant front taphole construction materials originally used quartz sand, refractory mud, graphite powder and other preparation, repair furnace operation and melting process has the following problems: 1. Preparation, the proportion of wet and dry mastery, affecting the quality of the tap hole;