超低碳铝镇静钢RH铝脱氧过程数学模型  

Mathematical Model of Aluminum Deoxidization in RH Reactor for Ultra-Low Carbon AI-Killed Steel

作　　者：赵新宇[1] 刘洋[1] 甄新刚[2] 王海宝[1] 吕延春[1] 

机构地区：[1]首钢技术研究院 [2]秦皇岛首秦金属材料有限公司

出　　处：《首钢科技》2014年第2期13-18,共6页Shougang Science and Technology

摘　　要：采用非均相两相流模型模拟RH炉精炼过程的钢液流动，采用多组分方程模拟铝和氧在钢液中的扩散过程，对组分方程源项进行控制以模拟化学反应过程，建立超低碳铝镇静钢RH炉铝脱氧过程的数学模型。结果表明，模拟结果与实际生产数据有很好的符合度，模型真实可靠。当提升气体流量为96m3／h时，加铝后200s左右钢液中的氧消耗至平衡浓度，化学反应停止，加铝后500s左右，钢液中的铝基本均匀；当提升气体流量从72m3／h增加到120m3／h时，钢液中的铝平均质量分数的最大值从0.14％减小到0.12％，脱氧时间由179.2s降至149.4s。An inhomogeneous two-phase model is used to simulate the RH circulating process. A multicomponent equation is used to simulate the diffuse process of element aluminum and oxygen. To simulate the diffuse process, the source term of component equation is controlled. The ultra-low carbon A1-killed steel aluminum deoxidization mathematical model in RH process is established. The results show that the simulation results are in accorded with the actual produce datum and the model is reliable. When the flux of lift gas increases to 96 m3/h, the mass fraction of oxygen is exhausted to balance concentration after 200s with aluminum threw into liquid steel and then the reaction stops. The aluminum is uniform after 500s with aluminum threw into liquid steel. When promoting the gas-flow from 72m3/h to 120 m3/h, the maximum value of aluminum average mass fraction decreases from 0.14% to 0.12% and the deoxidization time decreases from 179.2s to 149.4s. Key Words ultra-low carbon A1- killed steel, RH, aluminum deoxidization, gas lifting, multi- component equation

关 键 词：超低碳铝镇静钢 RH 铝脱氧 提升气体 多组分方程 

分 类 号：TF761.2[冶金工程—钢铁冶金]