The taphole of the converter is the channel through which molten steel enters the ladle from the converter. When tapping steel, it has to withstand the frictional erosion and oxidative erosion of high temperature molten steel and slag, resulting in a very low life of the tap hole, which requires constant repair and replacement, which will not only affect the production cycle, but also affect the quality and production stability of the molten steel. Gunning material

The tap hole is the channel through which molten steel flows from the converter to the ladle, and it is one of the key refractory components of the converter. The tapping port realizes the separation of steel slag during the tapping process, reduces the pollution of molten steel caused by the inflow of steel slag into the ladle, and also reduces the burning loss of alloy elements; at the same time, the taphole steel flow strongly stirs the molten steel in the ladle, which promotes slag and The floating of deoxidized products not only affects the production efficiency of molten steel smelting, but also affects the quality of molten steel. The converter steelmaking enterprises at home and abroad place the converter tapping technology (the tap hole and slag tapping technology) at a very important position.