气含率与浮选动力学常数的研究  

Research on gas holdup and flotation dynamics

作　　者：王黎伟[1] 龙秉文[1] 甘泉[1] 戢峻[1] 丁一刚[1] 吴元欣[1] 

机构地区：[1]武汉工程大学化工与制药学院,湖北省新型反应器与绿色化学工艺重点实验室,绿色化工过程教育部重点实验室,湖北武汉430073

出　　处：《化工矿物与加工》2014年第12期16-18,63,共4页Industrial Minerals & Processing

基　　金：国家自然科学基金资助项目(51074114)

摘　　要：气含率大小是决定浮选柱回收能力和分选效果的重要参数之一,浮选柱内气含率直接决定了气泡荷载上浮矿物的数量与质量,从而决定了浮选过程中精矿的产率和回收率。本文考察了磷矿在充填浮选柱的浮选过程中,表观气体流速和矿浆质量分数对充填浮选柱捕集区气含率的影响。将浮选过程中的气含率与浮选动力学常数相联系,并结合充填浮选柱的工艺特征,推导出了具体的关联式。Gas holdup size is one of the important parameters for column flotation recovery capacity and separation etfect and determines quantity and quality of bubble loaded floatin, g miner- als, thereby deciding the productivity and recovery rate of con- centrate in the flotation process. The paper explores the impact of superficial gas velocity and slurry concentration on gas holdup in the flotation column filling capture zone in the phosph^te flota- tion process. The correlative formula is obtained by associating gas holdup in the process of flotation with constants of the flota- tion kinetics in combination with the feature of filling process of flotation column.

关 键 词：磷矿 充填浮选柱 气含率 浮选动力学 

分 类 号：TD456[矿业工程—矿山机电]