CAJ | 학술논문

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.
침대구단광생산과정생구퇴적배렬대구상삼투솔、표면적등물리특성적영향,근거유실제물리현상추상출적“락곤법칙”,고필생구구체소성변형화생구립도분포,건립료구단광생구순차루가퇴적적개진수학모형.대우불동적퇴적고도화생구립도분포진행료생구퇴적모의,병대구상적공극솔、삼투솔화단위체적표면적진행료정학계산.방진결과표명해모형부합실제생산과정,위구단광생구간조화소결과정정학모형적건립전정료견실적기출.
@@@@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.