Mechanisms of nanobubble-enhanced flotation of galena from pyrite  

作　　者：Chao Wang Zhongxian Wu Tongbo Wang Bo Qiao Hao Huang Jincheng Ran Guangxi Ma Dongping Tao 

机构地区：[1]Chinalco Research Institute of Science and Technology Co.,Ltd.,Beijing 102209,China [2]School of Resources and Environmental Engineering,Shandong University of Technology,Zibo 255049,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第4期817-824,共8页矿物冶金与材料学报(英文版)

基　　金：financial support from the Major Science and Technology Special Project of Yunnan Province,China(No.202302AB080012);the National Natural Science Foundation of China(No.52204274);the Shandong Provincial Natural Science Foundation,China(No.ZR2021QE122).

摘　　要：To investigate the mechanisms of how nanobubbles enhance the flotation separation performance of galena from pyrite,the effects of nanobubbles on the surface properties of galena and pyrite and the interactions between mineral particles and air bubbles were examined in this study.Various analytical techniques,including focused beam reflectance measurement(FBRM),three-phase contact line(TPCL)analysis,atomic force microscopy(AFM),and contact angle measurement,were employed.It has been demonstrated that nanobubbles significantly enhanced the flotation recovery of galena and its flotation selectivity from pyrite,as compared to the conventional flotation process.The preferential formation of nanobubbles on the galena surface,which is more hydrophobic than pyrite surface,further increased the surface hydrophobicity and agglomeration of galena particles.The introduction of nanobubbles into the flotation system also increased in the maximum TPCL length and detachment length between the galena surface and bubbles,contributing to the enhanced flotation efficiency.

关 键 词：GALENA PYRITE NANOBUBBLE FLOTATION 

分 类 号：P61[天文地球—矿床学]