氮在钢液中溶解的热力学及动力学研究  

Thermodynamics and kinetics research of nitrogen dissolution in steel

作　　者：战东平[1] 邱国兴[1] 牛奔[1] 姜周华[1] 董大西[2] 杨峰功[2] 胡云生[2] 张慧书[3] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]石家庄钢铁有限责任公司炼钢厂,河北石家庄050031 [3]辽宁科技学院冶金学院,辽宁本溪117004

出　　处：《炼钢》2015年第5期7-11,共5页Steelmaking

基　　金：国家自然科学基金(50804009);国家863项目(2012AA03A503);辽宁科技学院博士科研启动基金(1406B06);辽宁省高等学校优秀人才支持计划(LJQ2015056)

摘　　要：为探索用氮气直接合金化的低成本氮微合金化钢冶炼技术,对某钢厂生产的3种钢在不同氮分压下气相吸氮过程中氮的溶解行为进行了研究,并用试验数据对所建立的钢液吸氮热力学和动力学模型进行了验证。模型计算结果和实测值吻合较好,试验结果表明:氮分压越大钢中氮的溶解度越大,Mo,Ni等元素对钢中氮含量有显著的影响;钢液吸氮和脱氮反应均为一级反应,吸氮平衡时间为25 min,脱氮平衡时间为40 min。In order to explore the low cost of nitrogen microalloyed steel smelting technology by direct alloying with nitrogen, the dissolution behavior of N2 in three kinds of steel which are the mainly productions of one domestic steelmaking factory was studied. And thermodynamics and dynamics of steel liquid nitrogen absorption model was verified by using the experimental data. Model calculation results and the measured values are in good agreement, and the experimental results show that the nitrogen partial pressure, the greater the solubility of nitrogen in the steel, the greater the molybdenum and nickel element has a significant effect on the nitrogen content in steel. Steel liquid nitrogen absorption and denitrification reaction is first order reaction and nitrogen balance absorption time of 25 rain, nitrogen balance time for 40 min.

关 键 词：炼钢 氮含量 热力学 动力学 

分 类 号：TF701.1[冶金工程—钢铁冶金]