炼钢铁水直接合金化工艺试验研究  

Experimental study on direct alloying process of hot metal in steelmaking

作　　者：富志生[1] 杨永刚 FU Zhisheng;YANG Yonggang(Iron and Steel Research Institute,Hongxing Co.,Ltd.,Gansu Jiuquan Iron and Steel,Jiayuguan 735100,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司钢铁研究院,甘肃嘉峪关735100

出　　处：《炼钢》2021年第5期17-21,共5页Steelmaking

摘　　要：基于某钢厂现场条件,对转炉出钢后使用铁水直接合金化炼钢的可行性进行了理论分析,并依据分析结果开展现场工业试验。试验结果表明:铁水中固有的碳、硅、锰元素均可作为钢水的合金化元素。在60 t转炉上试验,每兑入铁水0.8 t,钢水平均增碳0.05%,硅、锰质量分数变化量为0.01%~0.02%,对钢水磷含量的影响并不显著,可满足后道工序精炼过程钢水温度和成分的窄范围控制要求。炼钢铁水直接合金化工艺是一种创新的合金化后移的方式,有显著的经济效益。通过现场设备改进、工艺理论计算及试验研究,利用铁水在转炉阶段进行直接合金化,进一步推广应用是可行的。Based on the site conditions of a steel plant,the feasibility of using hot metal direct alloying after converter tapping was theoretically analyzed,and the field industrial test was carried out according to the analysis results.The results show that carbon,silicon and manganese inherent in hot metal can be used as alloying elements in molten steel.The results show that on a 60 t converter for each 0.8 t of hot metal added,the average carburization of molten steel is 0.05%and the mass fraction of silicon and manganese varies from 0.01%to 0.02%,and the effect of phosphorus content of molten steel is not significant,which can meet the narrow range control requirements of temperature and composition of molten steel in the subsequent refining process.The direct alloying process of hot metal for steelmaking is an innovative way of alloying backward,which has remarkable economic benefits.Through on-site equipment improvement,process theoretical calculation and experimental research,it is feasible to use hot metal for direct alloying in converter stage.

关 键 词：炼钢 铁水 合金化 回磷 

分 类 号：TF713.6[冶金工程—钢铁冶金]