采用铝造渣球和新型Al-Ca质改质剂,在某钢厂180 t转炉出钢时,对转炉出钢带入钢包的下渣进行了改质处理试验.针对铝镇静钢与沸腾钢两种出钢方式,分别研究了两种改质剂对转炉渣改质的影响及对钢液的作用.试验结果表明:每炉加入200 kg Al-Ca质改质剂的效果与加入400 kg铝造渣球的改质效果相当;应用两种改质剂均未见有明显增碳;在达到同样改质效果时,应用Al-Ca质改质剂既便于精炼处理,又具有非常明显的成本优势. The aluminum slagging ball and the new Al-Ca modifier were used to modify the lower slag of the steel strip delivered from the converter to the ladle during the 180 t converter tapping in a steel mill. Two kinds of tapping ways, the effects of two modifiers on the converter slag modification and the effect on the molten steel were studied respectively.The results show that the effect of adding 200 kg Al-Ca modifier per furnace and adding 400 kg Aluminum slag ball modification effect quite; application of two modifiers have not seen any significant increase in carbon; to achieve the same modification effect, the application of Al-Ca quality modifier both refining, but also has a very obvious Cost advantage.