stemming

The iron outlet is a very important part in the blast furnace, which is the channel for discharging molten iron and slag. Due to the large scale of blast furnace and the application of smelting technology, the iron output times increase, so the technological conditions become more severe. In order to prevent the gas from gushing out, after the molten iron and slag are discharged, the mouth of the blast furnace will be blocked by the mud immediately. Because the mud is forced into the blast furnace by the mud gun, this kind of mud is called the gun mud, which is one of the amorphous refractory materials. In the process of blast furnace operation, the high temperature slag and molten iron and high pressure gas jet erosion scour hole frequently, and the wall of iron, the impact of the high pressure gun mud and mud gun impact and vibration, use iron mouth nearby brick lining is easily damaged, so the taphole to sealing, and reduce the taphole damaged stemming is particularly important, also can say stemming control the life span of the blast furnace.