New insights into the flotation responses of brucite and serpentine for different conditioning times: Surface dissolution behavior  

作　　者：Ya-feng Fu Wan-zhong Yin Xian-shu Dong Chuan-yao Sun Bin Yang Jin Yao Hong-liang Li Chuang Li Hyunjung Kim 

机构地区：[1]College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China [2]School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China [3]State Key Laboratory of Mineral Processing,Beijing 102628,China [4]Department of Chemical and Materials Engineering,University of Alberta,Edmonton,Alberta T6G 2V4,Canada [5]Department of Mineral Resources and Energy Engineering,Jeonbuk National University,Baekje-daero,Deokjin-gu,Jeonju-si,Jeollabuk-do,561-756,Republic of Korea

出　　处：《International Journal of Minerals,Metallurgy and Materials》2021年第12期1898-1907,共10页矿物冶金与材料学报（英文版）

基　　金：financial support from the Project funded by the China Postdoctoral Science Foundation(No.2020M670709);the National Natural Science Foundation of China(No.51974064);the Fundamental Research Funds for the Central Universities,China(No.N2101025);the Open Foundation of State Key Laboratory of Mineral Processing(No.BGRIMM-KJSKL-2017-02);。

摘　　要：The inadvertent dissolution of gangue minerals is frequently detrimental to the flotation of valuable minerals.We investigated the effect of conditioning time on the separation of brucite and serpentine by flotation.By analyzing the Mg2+concentration,relative element content,and pulp viscosity,we studied the effect of mineral dissolution on brucite flotation.The results of artificially mixed mineral flotation tests(with-10μm serpentine)showed that by extending the conditioning time from 60 to 360 s,a large amount of Mg2+on the mineral surface gradually dissolved into the pulp,resulting in a decreased brucite recovery(from 83.83%to 76.79%)and an increased recovery of serpentine from 52.12%to 64.03%.To analyze the agglomeration behavior of brucite and serpentine,we used scanning electron microscopy,which clearly showed the different adhesion behaviors of different conditioning times.Lastly,the total interaction energy,as determined based on the extended DLVO(Derjaguin-Landau-Verwey-Overbeek)theory,also supports the conclusion that the gravitational force between brucite and serpentine increases significantly with increased conditioning time.

关 键 词：behavior INSIGHT viscosity 

分 类 号：TD923[矿业工程—选矿]