工程科学学报2016，Vol.38Issue(3)：320-327,8.DOI:10.13374/j.issn2095-9389.2016.03.004
浮选三相流中气泡运动特性的数值模拟
Numerical simulation of flotation bubble motion in a three-phase inner suspension fluid
摘要
Abstract
To find the motion law and optimum size of floatation bubbles in a three-phase flow, the Eulerian model is used to sim-ulate the motion process of bubbles with different initial diameters in pulps of different concentrations. The simulation results show that under the given initial condition, in the pulp with a certain concentration, bubbles of 4 mm catch the most mine grains;bubbles of any size above or below 4 mm cannot capture mine grains as many as those of 4 mm. When the pulp concentration is in the range of 20%-40%, the size of bubbles that capture the most mine grains does not change much. As the pulp concentration increases, the amount captured by a single bubble increases, so does the recovery rate of mine grains. In real production, bubbles of 3. 5-4 mm have small deformation, moderate horizontal shift and lifting speed, and strong ability of capturing and carrying mine grains and lifting, which are benefit for improving the quality and quantity of floatation production.关键词
浮选/气泡/运动模拟/数值模拟/悬浮液Key words
flotation/bubbles/motion simulation/numerical simulation/suspensions分类
矿业与冶金引用本文复制引用
江倩,彭小奇,宋彦坡,伍雁鹏..浮选三相流中气泡运动特性的数值模拟[J].工程科学学报,2016,38(3):320-327,8.基金项目
国家自然科学基金创新群体资助项目(61321003) （61321003）
国家自然科学基金重点资助项目(61134006) （61134006）
国家自然科学基金面上资助项目(61273169) （61273169）
