高炉风口喂钛线位置对护炉影响的数值模拟  

Numerical simulation of influences of titanium-bearing wire injection position on blast furnace hearth protection

作　　者：魏国[1] 孟超[1] 李子亮[1] 沈峰满[1] 杜鹤桂[1] 

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《钢铁研究学报》2016年第3期13-18,共6页Journal of Iron and Steel Research

基　　金：国家自然科学基金-钢铁联合研究基金资助项目(51074206);中央高校基本科研业务费资助项目(N120402011)

摘　　要：高炉风口喂钛线是维护炉缸局部侵蚀部位的措施之一。采用数值模拟方法分析了喂钛线后炉缸铁水中钛化物的迁移规律,讨论了喂入位置对护炉效果的影响。计算结果表明:不同喂入位置条件下,钛化物的迁移路径和分布相差很大。当风口喂入位置距铁口较远时,钛化物在炉缸侧壁、炉缸底面上均有分布,有利于维护对应位置的炉缸侧壁、炉底侵蚀区域;喂线位置距铁口较近时,可维护炉缸侧壁区域,较难保护炉底部位。由此可见,应综合考虑侵蚀部位、铁口位置特点,选择最佳喂线护炉位置。模拟结果为生产实践所验证,表明数值模拟方法可作为选择护炉方式、优化喂线位置的参考依据。Titanium-bearing wire injection through tuyere is one of the measures to maintain blast furnace hearth which has been eroded. In this case, the migration feature of titanium compound in hot metal inside the hearth was analyzed using numerical simulation method, and the influences of injection position on protection effects were dis- cussed. The calculation results show that the migration path and concentration distribution of titanium compound in hot metal is varied widely with different positions. When titanium-hearing wire is injected through the tuyere which located away from the taphole, titanium compound would distribute both at the sidewall and bottom of hearth. It＇s conducive to maintaining the corresponding erosion area. When injected through the tuyere near the taphole, only the sidewall of hearth could be protected. Thus, there exists the optimum injection position for dif- ferent erosion area, and this position should be determined under comprehensive consideration about the location of erosion area and taphole. The simulation results coincide well with production practice. It shows that numerical simulation can be used for the optimization of feeding position.

关 键 词：风口喂线 高炉炉缸 侵蚀 护炉 数值模拟 

分 类 号：TF54[冶金工程—钢铁冶金]