浮选体系中气泡运动特性研究进展  

Research Progress of Bubble Movement Characteristics in Flotation System

作　　者：李东林 张金英 王伟之 韩继康[4] 李凤久 LI Donglin;ZHANG Jinying;WANG Weizhi;HAN Jikang;LI Fengjiu(l.College of Mine Engineering,North China University of Science and Technology,Tangshan 063009,Hebei,China;Mining Development and Safety Technology Key Lab of Hebei Province,Tangshan 063009,Hebei,China;School of Light Industry,North China University of Science and Technology,Tangshan 063009,Hebei,China;School of Chemical Engineering and Technology,China University of Mining&Technology,Xuzhou 221116,Jiangsu,China)

机构地区：[1]华北理工大学矿业工程学院,河北唐山063009 [2]河北省矿业开发与安全技术实验室,河北唐山063009 [3]华北理工大学轻工学院,河北唐山063009 [4]中国矿业大学化工学院,江苏徐州221116

出　　处：《有色金属（选矿部分）》2024年第4期49-58,共10页Nonferrous Metals（Mineral Processing Section）

基　　金：河北省自然科学基金资助项目(E2017209214,E2022209123);中央引导地方科技发展资金项目(226Z4102G)。

摘　　要：浮选作为一种高效的选矿方法,更适于处理品位低、嵌布粒度细、矿物组成复杂的矿石资源,其研究和应用逐渐成为矿物加工领域关注的焦点。在浮选体系中,气泡作为浮选体系中“运输”矿物颗粒的载体,它的运动特性直接影响着矿物浮选的选别效果,因此,研究气泡的运动特性,对于优化浮选工艺与改善浮选效果有着重要意义。首先简述了浮选中常见的气泡生成方式,主要有机械搅拌发泡、气泡发生器发泡、电解发泡及超声波发泡四种方式。介绍了气泡参数中的形态特征参数、运动特征参数和分布特征参数的含义和计算公式;然后重点阐述了浮选中起泡剂、捕收剂、抑制剂、浮选机叶轮参数、浮选柱气泡发生器及充气量对气泡参数的影响;归纳了纳米气泡在微细粒矿物浮选中的应用。目前,浮选体系中气泡运动特性的研究存在着较多的理想假设和一定的局限性,与实际工艺条件相比存在着很大差距。因此,完善气泡测量方法、侧重于气泡在实际浮选环境中的运动特性研究以及研发新型纳米气泡生成设备将是未来的发展方向,通过提高气泡参数准确性及深入了解气泡在实际浮选环境中的运动特性,为浮选过程中气泡参数的调整及浮选设备的设计优化提供重要的参考依据。As an efficient mineral processing method,flotation is more suitable for processing ore resources with low grade,fine embedded particle size and complex mineral composition,and its research and application have gradually become the focus of attention in the field of mineral processing.In the flotation system,bubbles are used as the carrier of"transporting"mineral particles in the flotation system,and its motion characteristics directly affect the selection effect of mineral flotation,so studying the motion characteristics of bubbles is of great importance for optimizing the flotation process and improving the flotation effect.This paper first briefly describes the common bubble generation methods in flotation,including mainly mechanical stirring foaming,bubble generator foaming,electrolytic foaming and ultrasonic foaming.The meanings and calculation formulas of morphological feature parameters,motion characteristic parameters and distribution characteristic parameters in bubble parameters are introduced.Then,the effects of flotation foaming agent,collector,inhibitor,flotation machine impeller parameters,flotation column bubble generator and inflation amount on bubble parameters were emphasized.The application of nanobubbles in fine-grained mineral flotation was summarized.At present,the study of bubble motion characteristics in flotation system has many idealized assumptions and certain limitations,and there is a big gap compared with the actual process conditions.Therefore,it is pointed out that improving the bubble measurement method,focusing on the study of the motion characteristics of bubbles in the actual flotation environment and the research and development of new nano-bubble generation equipment will be the future development direction.Improving the accuracy of bubble parameters and indepth understanding of the motion characteristics of bubbles in the actual flotation environment would provide an important reference for the adjustment of bubble parameters in the flotation process and the design and optim

关 键 词：浮选气泡 运动特性 气泡参数 

分 类 号：TD989[矿业工程—选矿] TD923.7