带有翻料装置的回转窑内衬结构的数值模拟  

Numerical simulation of a rotary kiln lining with turn-down rig structure

作　　者：王春华[1] 陈文仲[1] 陈海耿[1] 左春友[1] 田远航[2] 李强[3] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]沈阳远大铝业集团,沈阳110161 [3]沈阳铁路机械学校机械专业部,沈阳110031

出　　处：《材料与冶金学报》2008年第4期308-313,共6页Journal of Materials and Metallurgy

基　　金：国家科技支撑计划课题2006BAB12B04

摘　　要：炭素回转窑内物料料层过厚,则物料煅烧不透.为解决此问题可在回转窑内衬增设翻料装置,即将原来的平滑窑内衬改为带有导流槽的凸凹内衬.为研究该内衬结构对窑内热工状况的影响,应用计算流体力学软件Fluent对窑内流场、温度场、浓度场等作了耦合计算.结果表明,翻料装置结构的不同对窑内流场、温度场、浓度场的影响不同;合理翻料装置的安装,可以加速挥发分的燃烧,提高窑内温度,以达到解决料层过厚导致物料煅烧不透的问题又不增大炭质烧损的目的.When the material bed is too thick in a carbon rotary kiln, the impenetrable calcination of the material will be caused. The kiln lining with turn - down rig structure, i. e. , knaggy diversion trench is introduced. In order to study this structure, computing simulation of flow field, temperature field and concentration field in the rotary kiln was carried out by Fluent software. The results show that different turn - down rigs have different impacts on the flow field, temperature field and concentration field in the kiln. Reasonable install of turn - down rig can accelerate the combustion of the volatiles and increase the kiln temperature. Therefore, install of turn - down rig structure can solve calcined impenetrable problem of the material and not lead to the increment of the amount of solids lost.

关 键 词：炭素回转窑 翻料装置 数值模拟 

分 类 号：TF062[冶金工程—冶金物理化学]