180t RH气体扩散行为物理模拟  

Physical simulation of gas diffusion behavior with 180t RH

作　　者：魏春新 孟凡童[2] 李胜利[2] 刘海啸[2] 王国承[2] 艾新港[2] 

机构地区：[1]鞍钢集团朝阳钢铁有限公司,辽宁朝阳122000 [2]辽宁科技大学冶金工程辽宁省重点实验室,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2015年第1期1-4,共4页Journal of University of Science and Technology Liaoning

基　　金：教育部2011年度高等学校博士学科点专项科研基金项目(20112120l20003);辽宁省教育厅项目(L2012090);辽宁省大学生创新创业训练计划项目(201310146019)

摘　　要：以某炼钢厂钢包和RH真空精炼设备为原型,建立与原型尺寸比为1:4的物理模型,测量吹入CO2后Na OH水溶液p H值变化来研究供氧、脱碳等气体扩散行为。通过不同提气量和真空度条件下的对比试验,可以得出:吹气过程,真空度对CO2浓度变化影响不大,提气量对CO2浓度的影响较大,增加提气量能够提高CO2浓度,提气量为5.2 m3/h时CO2浓度比提气量为3.0 m3/h时高约7%;脱气过程,真空度对CO2浓度的影响有所改善,提气量对CO2浓度的影响趋势比真空度稍微明显一些。A physical model of 1/4 linear scale for ladle and RH vacuum degassing in one steelmaking plant is established,it is used to study the gas diffusion behavior such as oxygen supply and decarburization by mea-suring pH changes in NaOH solution after CO2 insufflation. The contrast test for different gas flow with differ-ent vacuum degree indicates：the vacuum degree has little effect on the change of CO2 concentration during the blowing process,and the gas extraction has a great influence on CO2 concentration. Increasing the gas flow can increase the CO2 concentration,and the CO2 concentration of 5.2 m3/h gas flow is about 7%higher than that of 3.0 m3/h gas flow. During the degassing process,the effect of vacuum on CO2 concentration is im-proved,and the effect tendency of gas flow is more evident than that of vacuum.

关 键 词：RH循环精炼 吹气及脱气 真空度 提气量 

分 类 号：TF743[冶金工程—钢铁冶金]