多功能铁水包加盖保温效果分析
Analysis on heat preservation of multifunctional hot metal ladle
杨光 1徐安军 1贺东风 1汪红兵 2袁飞1
作者信息
- 1. 北京科技大学冶金与生态工程学院,北京100083
- 2. 北京科技大学计算机与通信工程学院,北京100083
- 折叠
摘要
为了减小运输过程中铁水温降以及降低钢铁生产成本,对铁水包加盖的综合保温效果进行了定量分析.通过建立相应数学模型和数值计算,分别对加盖和不加盖的230 t铁水包进行5 h的空包运输过程模拟,以及加盖和不加盖的满包铁水包1h模拟.模拟结果显示,在5h空包运输阶段加盖,能有效改善接铁前的空包热状态,减少下次接铁时铁包耐材所需的蓄热量,且铁包上部包沿处温度提高最大为194 K,上下部温差减小140 K,降低热应力所导致的耐材损坏;在1 h满包运输阶段,全程周转增设保温盖能减小铁水温降约13 K.最后,将模拟试验结果与现场实测数据结果进行分析比较,相对误差值小于5%,验证了模型的准确性.
Abstract
In order toreduce the temperature drop of molten ironand thecost of production during molten iron transporta-tion,the comprehensive insulation effect of ladle with lid was analyzed quantitatively. In the condition with or without lid,the simulations of unloaded ladle towards the ladle with 230 t of molten iron in 5 h and loaded ladle in 1 h were car-ried out via mathematical model and numerical calculation. The result showed that transportation of unloaded ladle for 5 h,the insulation lid couldincrease the overall temperature of inner ladlewall ,increase by 194 K at most on the edge of ladle,and meanwhile reduce the temperature difference between to pand bottom(140 K).The insulation lid couldimprovethe heat condition of unloaded ladle before the ladle picked up molten iron and reduce the heat storage the ladle refractory required when the ladle picked up the molten iron. In the 1 h transportation of loaded ladle,the insula-tion lid couldeffectively reduce the thermal heat dissipation and thus decrease the temperature drop of molten iron about 13 K. Finally,the simulation experiment result and the field measured data were comparatively analyzed. The relative er-ror was less than 5%,which demonstrated the accuracyof the model.
关键词
多功能铁水包/铁水温降/有限体积法/温度场Key words
multifunctional hot metal ladle/hot metal temperature drop/finite volume method/temperature field引用本文复制引用
基金项目
国家自然科学基金资助项目(51674030)
国家重点研发计划资助项目(2016YFB0601301)
出版年
2017
NETL
NSTL
维普
万方数据