Abstract: Because of the issues of continuous erosion of a 60 t BOF tapping hole, easily occurring local serious etching led to irregular shape of tapping hole, tapping flow diffusing and slagging down, during steelmaking process the aim content of elements can't be controlled led to production interruption, service life of tapping hole less than that of furnace body and frequently changing tapping hole. By the measures including improving the tapping hole assemble process, optimizing the tapping changing process, adjusting slag damming process and maintaining the tapping hole, the amount of slagging down decreases, the yield of alloy Si and Mn increase respectively from original 76. 75% and 90. 04% to 84. 26% and 91. 16% , the BOF end [O] decreases from 645 x 10^-6 to 463 x 10^-6 , and the service life of tapping hole increases obviously from original 200 ~ 300 heats to 700 ~ 800 heats, and the times of change tapping hole per month decreases from 6 ~ 8 to 2 ~ 3.

摘要： 因60 t转炉出钢口砖不断侵蚀,容易出现局部侵蚀严重、形状不规则、出钢钢流散流和下渣等问题,在炼钢过程中易产生成分超差增加,造成生产中断,出钢口使用寿命难以和炉体同步,出钢口频繁更换。通过改进出钢口组装工艺,优化出钢口更换工艺,调整挡渣工艺,维护出钢口等措施,减少了下渣量,Si、Mn合金收得率分别由76.75%和90.04%提高至84.26%和91.16%、BOF终点[O]由645×10^-6降低至463×10^-6,出钢口使用寿命明显提高,由优化前的200~300炉提高至700~800炉,每月更换出钢口次数由68次减少至23次。