单渣脱磷石灰消耗量预报模型的应用与分析  

Application and analysis of lime consumption forecast model in single slag dephosphorization

作　　者：张思源[1] 包燕平[1] 林路[1] 郭建龙[1] 王敏[1] 

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《中国冶金》2016年第11期21-25,共5页China Metallurgy

基　　金：中国博士后科学基金资助项目(2015T80039);中央高校基本科研业务费资助项目(FRF-TP-15-008A3)

摘　　要：以物料平衡和热力学平衡等为理论基础,通过钢厂数据对理论结果进行修正,应用Visual Basic软件设计单渣脱磷过程石灰消耗量预报模型。预报的石灰消耗量与钢厂数据进行对比,误差范围在20%以内的占到93.4%,10%以内的占到82.7%。通过该模型分析铁水硅、磷质量分数和终点磷质量分数对石灰消耗量的影响。结果表明,随着铁水硅、磷质量分数提高及钢水终点磷质量分数降低,石灰料消耗量变大。铁水磷质量分数超过临界值时,石灰消耗量显著增加,在铁水硅质量分数分别为0.2%、0.4%、0.6%和0.8%的条件下,铁水临界磷质量分数分别为0.15%、0.14%、0.13%和0.12%;终点磷质量分数小于0.01%时,石灰消耗量显著增加,经济条件变差,小于0.007%时,随着石灰消耗量增加,终点磷几乎不变,单渣法不适合生产磷质量分数低于0.007%的超低磷钢。Based on the material balance and thermal balance theory,the lime consumption forecast model in single slag dephosphorization process is designed,using visual basic software and the theoretical results are modified by the date from steel plant.By comparing the forecast lime consumption with the date from steel plant,the errors in the range of 20% and less than 10% account for 93.4% and 82.7%,respectively.The effect of initial Si and P content and End-P content on lime consumption are analyzed through the model.The results show that the lime consumption increases with the increase of initial Si and P content and the decrease of End-P content.Lime consumption increases significantly when initial P content exceeds a critical value.The critical P content in hot metal is 0.15%,0.14%,0.13% and 0.12%,respectively,when the initial Si content is 0.2%,0.4%,0.6% and 0.8%,respectively.When the End-P content is less than 0.01%,the lime consumption increases significantly,and the economic condition is poor.When the End-P content is less than 0.007%,the End-P content is almost unchanged with the increase of lime consumption.Thus,the single slag process is not suitable for the production of ultra-low phosphorus steel.

关 键 词：单渣法 脱磷模型 石灰消耗量 超低磷钢 

分 类 号：TF713[冶金工程—钢铁冶金]