石灰石在莱钢120t转炉炼钢中应用实践

石灰石有非常好的冷却效果，在化渣过程中能够起到抑制前期碳氧反应的作用，使前期碳氧反应与炉渣高度泡沫性的时间错开，避免了泡沫型喷溅产生。通过加料控制、枪位控制、氧压和底吹控制，将石灰石作为压喷剂和脱磷剂，在120t顶底复吹转炉上形成一套无喷溅高效去磷的转炉石灰石造渣工艺,降低石灰消耗，解决了转炉泡沫型喷溅问题，提高转炉脱磷率，降低生产成本，提高钢水质量，同时具有显著的经济和环保效益。

Application of limestone in Laigang 120 t converter steelmaking

Limestone has very good cooling effect, during the slag process, it can play a role in suppressing the early reaction of carbon and oxygen, to make the precarbon and oxygen reaction staggered with the highly spumescence stage of slag to avoid the appearance of splashing foam. Through charging control, gun control, oxygen pressure and bottom blowing, the limestone was taken as pressure spray and dephosphorization agent, in the 120t combined-blowing converter formed a non-splash efficient phosphorus slag formation of converter, limestone, which can reduce the consumption of lime and solve the problem of the converter type bubble splash, and also can improve the dephosphorization rate of converter, reduce production costs, improve steel quality, and has significant economic and environmental benefits.