【摘要】 根据相似理论,以钢厂80 t单嘴精炼炉1:4的水模型模拟了单嘴精炼炉内气泡行为,分析了吹气流量（2～10 L/min）、吹气塞直径（15～30 mm）对气泡行为、混匀时间的影响。水模拟结果表明,随吹气流量增加,混匀时间减少,但吹气流量≥6 L/min,混匀时间没有显著变化;在相同吹气量下,吹气塞直径增加,混匀时间减少。实验研究基础上,在80 t单嘴精炼炉上进行了超低碳钢的生产试验,结果表明单嘴精炼炉在18 min脱碳时间内,钢中碳含量可降到10×10（-6）;脱硫剂消耗4 kg/t的情况下,成品钢中S含量为（20～30）×10^-6,脱硫率平均达49%;吹氩强度平均为4 L/（t·min）,是相同吨位RH的25%。更多还原

【Abstract】 According to similarity theory,the bubble behavior in single snorkel refining furnace has simulated by using a scale 1:4 water model for an 80 t single snorkel refining furnace at steel works,and the effect of gas blowing rate （2～10 L/min） and plug diameter（15～30 mm） on bubble behavior and mixing time is analyzed.Water simulation results show that with increasing gas blowing rate the mixing time decreases,but as gas blowing rate≥6 L/min,the mixing time has no obvious change;at equal gas blowing rate,with increasing plug diameter the mixing time decreases.Based on water model experimental study,the pilot production of ultra-low carbon steel by an 80 t single snorkel refining furnace has been carried out.Results show that within decarburization time for 18 min in single snorkel refining furnace the carbon content in steel may decrease to 10×10^-6;at the condition of using 4 kg/t desulphurizing agent the sulphur content in finished steel is（20～30）×10^-6 and the average desulphurizing rate is 49%;the average argon blowing intensity is 4 L/（t·min） of a single snorkel refining furnace,it is 25%that of a RH unit with same capacity.更多还原