本文叙述了鞍钢大型转炉200t钢包采用石灰基渣粉喷吹的试验研究。探讨了合适的渣粉成分配比及工艺参数对效果的影响。喷吹渣粉脱硫率平均为74.4%,最低硫含量为32ppm。对硫化物夹杂可局部变态,对氧化物夹杂控制较为彻底。喷渣粉后钢中[O]_T比喷吹CaSi粉要低,且夹杂物颗粒较为细小、弥散,显示了石灰基渣粉喷吹的独特的冶金效果。 This paper describes the experimental study of the injection of lime-based slag powder into the 200t ladle of the large-scale converter in Ansteel. The effects of the appropriate proportion of slag powder and process parameters on the effect were discussed. Spraying slag powder desulfurization rate averaged 74.4%, the minimum sulfur content of 32ppm. Inclusion of sulfide may be localized metamorphosis, oxide inclusions more thoroughly controlled. Blasting powder after the steel [O] _T blowing CaSi powder is lower, and inclusions particles are more small, dispersed, showing the unique metallurgical effect of lime-based slag blowing.