高炉出铁过程中铁水非稳态流动对炉缸炉底侵蚀的影响  

Effect of unsteady flow of molten iron in blast furnace on hearth bottom erosion

作　　者：袁辉[1] 金焱[1] 薛正良[1] 王炜[1] 罗霄[1] 程常桂[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《钢铁研究学报》2017年第7期544-550,共7页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51474164)

摘　　要：基于有效容积为1 750m3的高炉炉缸在实际生产过程中受损状况,利用Fluent软件VOF方法建立高炉炉缸出铁过程的非稳态数学模型,探究铁水流动对炉缸侵蚀的影响。结果表明,死料柱沉底时底部压力较大;剪应力在出铁口的底部、炉缸炉底与死料柱边缘的交线处较大。死料柱浮起时底部所受压力比沉底小,炉底中心的压力较小,而边缘位置则出现负压,剪应力在炉底中心、出铁口的底部等位置较大。无论死料柱沉底与否,出铁口附近的炉壁剪应力在垂直方向上距离出铁口越近则越大,而且出铁口下侧的剪应力高于上侧的剪应力。Based on actual hearth damaging situation of blast furnace with volume of 1750m3,the influence of hot metal flowing out during tapping on erosion of hearth was studied by VOF method in the Fluent CFD software.The results show that the pressure at the bottom of hearth is higher when the deadman sits on the bottom of hearth.The shear stress is higher at the bottom of taphole and the intersection between bottom of hearth and deadman edge.When the deadman is floating in the hearth,the pressure at the bottom of furnace is lower than that of deadman sitting on the bottom of hearth,the pressure is lower at the center of the bottom and has negative values at the border of the bottom;the shear stress is higher at center of bottom and lower part of taphole.Whether the deadman sits on the bottom or not,the shear stress in the vertical direction at the hearth wall increases with reducing the distance from the taphole.The shear stress on the underside of the outlet is higher than the shear stress on the upper side.

关 键 词：炉缸 数值模拟 机械冲刷 出铁口 

分 类 号：TF573[冶金工程—钢铁冶金]