电渣重熔中脱氧剂种类影响炉渣脱氧的热力学分析  

Thermodynamics Analysis of Slag Deoxidization with Different Deoxidizers During Electroslag Remelting Process

作　　者：侯栋[1] 姜周华[1] 董艳伍[1] 周伟基 

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]大连特殊钢有限责任公司,辽宁大连116100

出　　处：《东北大学学报（自然科学版）》2016年第5期668-672,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51274266;U1360103);国家高技术研究发展计划项目(N2012AA03A504)

摘　　要：以工业纯铁为研究对象,熔渣-金属中各个组元间的热力学平衡反应和质量守恒为基础,计算了不同的脱氧剂添加量下钢中的Si,Al的平衡质量分数,建立了脱氧剂Al,CaSi,CaSiBa的脱氧热力学模型.结果表明:基于本模型对多种脱氧剂进行的研究能够符合实验结果,在采用Al,CaSi,CaSiBa脱氧时,渣中FeO质量分数分别能降低到0.04%,0.08%,0.08%,铝脱氧可以使得熔渣中氧势降到最低,且渣中Al2O3由于脱氧而增加的量相对于原始质量分数变化幅度较小,与CaSi,CaSiBa相比具有良好的氧势控制能力.A thermodynamics model for deoxidation in industrial pure iron system with Al, CaSi, CaSiBa as deoxidizers was developed by calculating the equilibrium mass fractions of Si, Al in steel based on the thermodynamics equilibrium and mass conservation. The results from the thermodynamics model can be in a good agreement with the experimental results. The deoxidizers of Al, CaSi and CaSiBa can make the FeO content in slag decrease to 0. 04% , 0.08% and 0. 08% , respectively. Meanwhile, not only can Al make the oxygen potential of slag decrease to the lowest value, but also its deoxidizing product of Al2O3 change little, which shows the excellent performance of stabilizing slag composition.

关 键 词：炉渣离子分子共存理论 电渣重熔 脱氧 热力学模型 

分 类 号：TF142[冶金工程—冶金物理化学]