化工进展2018，Vol.37Issue(5)：1687-1691,5.DOI:10.16085/j.issn.1000-6613.2017-1360
颗粒物料在半封闭式回转鼓内的混合特性
Mixing characteristic of granular materials in semi-closed rotary drum
摘要
Abstract
In semi-closed rotating drum under different rotating speeds and inclining angle,the mixing process of granular materials was simulated by using discrete element method(DEM),and the effects of radial and axial mixing characteristic of granular materials were analyzed by using segregation index S based on particle contact-numbers. The results showed that the rotating speed and inclining angle of rotary drum have significantly affected on the radial and axial mixing characteristic of granular materials. When the inclining angle is constant and the rotating speed is 15r/min,30r/min or 45r/min,respectively, the radial and axial mixing speed increase with the addition of rotating speed. The influence of raising rotating speed is smaller and smaller on the radial and axial mixing speed while the rotating speed is over 30r/min. When the rotating speed is constant and the inclining angle is 0°,17° or 34°,respectively, increasing inclining angle has an obviously promotion to the axial mixing speed,but it has never promoted to the radial mixing speed. When the inclining angle is over 17°,the growth rate of axial mixing is becoming smaller gradually,and the radial mixing speed is decreasing with the increase of inclining angle,but the decline of radial mixing speed will reduce with the increase of the rotating speed.关键词
回转鼓/混合/颗粒物料/离散单元法/模拟Key words
rotary drum/mixing/granular materials/discrete element method/simulation分类
化学化工引用本文复制引用
刘义伦,伍天翔,赵先琼,刘思琪,苏家辉..颗粒物料在半封闭式回转鼓内的混合特性[J].化工进展,2018,37(5):1687-1691,5.基金项目
国家自然科学基金(51375500)、长沙市科技计划重点项目(K1508090-11)及中南大学研究生创新项目(2016zzts310). （51375500）
