Abstract:

When the tapping hole is being opened， tapping time should be maximized for the most stable operation of blast furnace. Furthermore， low consumption of clay gun， the reduction of labor intensity and environmental protection can be achievable. For longer tapping time， the damage rate of clay-gun-made tapping passage should be reduced. By analyzing the cause of damage， this paper proposes the methods for prolonging the tapping time in several aspects， in terms of upgrading the corrosion resistance and wearability of clay gun as well as improving the furnace operation mode.