Study on the flotation technology and adsorption mechanism of galena–jamesonite separation  

作　　者：Sun Wei Han Haisheng Tao Hongbiao Liu Runqing 

机构地区：[1]School of Minerals Processing & Bioengineering, Central South University

出　　处：《International Journal of Mining Science and Technology》2015年第1期53-57,共5页矿业科学技术学报（英文版）

基　　金：financially supported by the National Natural Science Foundation (Nos. 51104179 and 51374247)

摘　　要：In order to further separate the concentrate containing galena and jamesonite before undergoing hydrometallurgical process, flotation experiment was performed on the basis of mineralogical analysis.And the adsorption mechanisms of collector H on galena and jamesonite were also studied by FT-IR spectra analysis and molecular dynamics(MD) simulation. The flotation result shows that the efficient separation can be achieved with H as selective collector. Galena concentrated with Pb grade of 72.09%and Pb recovery of 50.96% was obtained, and jamesonite concentrated with Sb grade and recovery of10.89% and 76.67% respectively was obtained as well. Infrared spectrum analysis indicates that collector H can adsorb on the surface of galena and react with Pb2+to generate hydrophobic salt, while no evident adsorption phenomenon was observed on the surface of jamesonite. The MD simulation and calculation results demonstrate that adsorption energy of collector H on galena and jamesonite surface is à872.74 k J/mol and à500.538 k J/mol, respectively, which means collector H is easier to adsorb on the surface of galena than that of jamesonite.In order to further separate the concentrate containing galena and jamesonite before undergoing hydrometallurgical process, flotation experiment was performed on the basis of mineralogical analysis. And the adsorption mechanisms of collector H on galena and jamesonite were also studied by FT-IR spectra analysis and molecular dynamics （MD） simulation. The flotation result shows that the efficient separation can be achieved with H as selective collector. Galena concentrated with Pb grade of 72.09% and Pb recovery of 50.96% was obtained, and jamesonite concentrated with Sb grade and recovery of 10.89% and 76.67% respectively was obtained as well. Infrared spectrum analysis indicates that collector H can adsorb on the surface of galena and react with Pb^2＋ to generate hydrophobic salt, while no evident adsorption phenomenon was observed on the surface of jamesonite. The MD simulation and calculation results demonstrate that adsorption energy of collector H on galena and jamesonite surface is -872.74 kJ/mol and -500.538 kJ/mol, respectively, which means collector H is easier to adsorb on the surface of galena than that of jamesonite.

关 键 词：Mixed concentrationGalena JamesoniteFlotationMolecular dynamic simulationAdsorption energy 

分 类 号：TD923[矿业工程—选矿]