材料期刊网

根据透气砖的结构形式，通过理论计算或实际测试得出透气砖的最小供气流量45Nm3/h和上限供气流量200Nm3/h，并针对两块和四块透气砖的底部供气条件，建立了与冶炼制度相适应的多种底吹供气模式。应用后复吹炉龄大幅提高，平均复吹炉龄达到7000炉以上，实现了复吹与炉龄同步；复吹转炉终渣TFe降低3.25个百分点，终点钢水氧活度降低103PPm，终点钢水[C]%•[O]%积达到0.0026，合金收得率明显提高。

First according to the structure of purging plugs, the limit gas flow is obtained through theoretical calculation or practical test,the minimum gas flow is 45Nm3/h and the maximum gas flow is 200Nm3/h.Different bottom blowing patterns suitable for smelting system were established based on different gas supply conditions about two and four purging plugs.Obtain a good result after industrial use,the life of combined blown converters were greatly improved, the life of combined blown can be the same with that of converter, the TFe in the slag is lowered by 3.25%,the [O] in steel is decreased by103PPm, the measured [C]•[O] at the end point of smelting is as high as 0.0026, the yield of alloy is increased significantly.