浮选颗粒与气泡间动态作用过程研究进展  

Research progress of dynamic interaction process between flotation particles and bubbles

作　　者：李美 蒋昊[1] 刘志龙 王宾 滕鑫 LI Mei;JIANG Hao;LIU Zhi-long;WANG Bin;TENG Xin(School of Resource Processing and Bioengineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083

出　　处：《中国有色金属学报》2022年第6期1796-1809,共14页The Chinese Journal of Nonferrous Metals

摘　　要：颗粒与气泡间的相互作用对浮选过程有着至关重要的作用,二者能否发生有效黏附是决定浮选效率高低的关键。高速摄影技术能直接观察气泡−颗粒相互作用微观动态过程,具有可视化、直接化等优点,在颗粒−气泡碰撞、黏附、三相接触线(TPC)形成、脱附等方面应用广泛。本文总结了基于高速摄影技术探究颗粒−气泡相互作用的研究进展,颗粒与气泡间碰撞黏附过程研究主要采用颗粒沉降法,TPC的形成过程研究主要采用单气泡上升法,颗粒的脱附过程及黏附力的研究则主要采用单气泡驱动法。这些研究结果表明,颗粒的形状和粗糙度、气泡的大小和运动速度、表面活性剂浓度和类型、矿物疏水性等因素均会对颗粒−气泡间的碰撞−黏附−脱附过程产生重要影响。The interaction between particles and bubbles plays an important role in the flotation process,and whether effective adhesion or not is the key to determining the flotation efficiency.High-speed photography technology can directly observe the bubble-particle interaction dynamical microscopic process,which has a wide application in particle-bubble collision,adhesion,and three-phase contact line(TPC)formation,desorption and etc.This paper mainly summarizes the research progress of particle-bubble interaction based on high-speed photography technology.The particle-bubble collision and adhesion process are observed by the particle sedimentation method,and the TPC formation process is researched by the single bubble rise method,and the particle desorption process and adhesion force are found by the single-bubble driving method.These research results suggest that the shape and roughness of the particles,the size and movement speed of the bubbles,the concentration and type of surfactants,and the hydrophobicity of minerals would all have an important impact on the process of collision,adhesion and desorption between particle and bubble.

关 键 词：碰撞黏附 三相接触线 矿物颗粒 气泡 高速摄影技术 

分 类 号：TD923[矿业工程—选矿]