铝熔炼炉炉衬组合的优化模拟  

Numerical simulation and optimizing combination of aluminum melting furnace linings

作　　者：王计敏[1] 闫红杰[1] 周孑民[1] 李世轩[2] 贵广臣[2] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]苏州新长光热能科技有限公司,江苏苏州215008

出　　处：《中南大学学报（自然科学版）》2012年第4期1523-1531,共9页Journal of Central South University:Science and Technology

基　　金：湖南省自然科学基金资助项目(07JJ4016);中南大学博士生创新基金资助项目(2009bsxt022)

摘　　要：为了减少炉衬的热损失和节约投资成本,针对铝熔铸行业广泛使用的反射式铝熔炼炉,以三层平壁炉衬结构为研究对象,计算分析隔热方式对炉衬传热影响。以经济厚度法为依据,推导出炉衬的经济厚度计算公式,并通过编程实现炉衬组合的计算机优化。同时以蓄热式铝熔炼炉热平衡测试为例,建立铝熔炼炉数学模型,运用计算流体力学软件FLUENT对炉窑工作制度为40周的优化前后的炉衬组合进行仿真。结果表明:炉衬组合的计算机优化结果可获得比较理想的经济效益:炉墙采用40 mm黏土质浇注料+300 mm硅藻土砖+120 mm硅酸铝纤维毡;炉顶采用220 mm普通耐火混凝土+150 mm黏土质浇注料+80 mm硅酸铝纤维毡;炉底采用200 mm高铝质浇注料+300 mm硅藻土砖+50 mm黏土质浇注料。In order to reduce heat loss and save cost,three-tier slab was simplified for furnace linings of widely-used reverberatory aluminum melting furnace in aluminum casting industry.Heat transfer analysis of different heat-insulating mode on furnace lining was carried out.Based on economic thickness method,the calculation formulae of economic thickness for furnace linings were introduced,and furnace linings were optimized by computer programming.On this basis,a three dimensional mathematical model of aluminum melting furnace was developed based on heat balance test of regenerative aluminum melting furnace.Furnace linings before and after optimization with 40-week working system were simulated by CFD software FLUENT.The results show that ideal economic effect is obtained by optimization as follows： furnace side with 40 mm clay castables,300 mm diatomite brick and 120 mm alumino-silicate fiber felts;furnace top with 220 mm refractory concrete,150 mm clay castables and 80 mm alumino-silicate fiber felts;furnace bottom with 200 mm high-alumina castable,300 mm diatomite brick and 50 mm clay castables.

关 键 词：铝熔炼炉 炉衬 数值模拟 优化组合 

分 类 号：TF806.31[冶金工程—有色金属冶金]