基于落滚法则的球团矿生球堆积改进模型  

Improved model of iron-ore pellets packing based on dropping and rolling method

作　　者：彭俊[1] 王建辉[1] 顾树生[1] 方晓柯[1] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110819

出　　处：《控制与决策》2013年第4期547-551,共5页Control and Decision

基　　金：中央高校基本科研专项资金项目(N100404017);辽宁省工业攻关计划项目(2010220014)

摘　　要：针对球团矿生产过程生球堆积排列对球床渗透率、表面积等物理特性的影响,根据由实际物理现象抽象出的"落滚法则",考虑生球球体塑性变形和生球粒度分布,建立了球团矿生球顺次累加堆积的改进数学模型.对于不同的堆积高度和生球粒度分布进行了生球堆积模拟,并对球床的空隙率、渗透率和单位体积表面积进行了精确计算.仿真结果表明该模型符合实际生产过程,为球团矿生球干燥和烧结过程精确模型的建立奠定了坚实的基础.In the iron-ore pellet induration process, the green ball packing influences the porosity, the permeability, and the surface area of pellet bed. Take the plastic deformation and size distribution of green balls into consideration, an improved numerical model for sphere packing process is presented by using dropping and rolling rules which are derived from a realistic physical phenomenon. The simulation is taken for different packing heights and size distributions, and the corresponding accurate porosity, permeability and surface area for normal distribution of sphere radii can be got. The simulation result shows that the model is efficient and well reflects realistic packing process, and it also provide the foundation of accurate drying and induration model.

关 键 词：落滚法则 球体堆积 塑性变形 粒度分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]