300t顶底复吹转炉炉渣磷酸盐容量计算分析及预测模型

Calculation and analysis of slag phosphate capacity and prediction model in 300 t top-and bottom-blowing converter

通过对某钢厂脱磷转炉炉渣磷酸盐容量计算和分析并结合前人的研究成果,得出实测炉渣磷酸盐容量与炉渣中碱性氧化物含量、炉渣光学碱度、炉渣中全铁含量和温度的变化关系,并结合生产数据拟合出炉渣的组成与炉渣磷酸盐容量的表达式.将文献报道的不同炉渣磷酸盐容量模型的计算值与实测值进行了对比和分析.基于共存理论建立了本渣系炉渣磷酸盐容量预测模型,误差分析表明该预测模型准确可信,将为现场生产提供理论指导.

The effect of alkaline oxide content,optical basicity,total iron content in slag and temperature on the measured slag phosphate capacity was investigated through the calculation and analysis of the slag phosphate capacity during the converter dephosphorization process combined with previous study. The relationship between phosphate capacity and composition of slag was fitted according to the production data. In addition,different prediction models of phosphate capacity were compared and analyzed from previous studies. Based on the coexistence theory,the prediction model of phosphate capacity in slag system was established,and the error analysis shows that the prediction model is accurate and credible,which can provide a theoretical guidance for the field production.