Nature of (001) and (00) faces and flocculation flotation of kaolinite  

作　　者：孙伟 王毓华 李海普 胡岳华 

机构地区：[1]School of Minerals Processing and Bioengineering

出　　处：《中国有色金属学会会刊：英文版》2003年第4期968-971,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project(G19990 64 90 1)supportedbytheNationalKeyFoundamentalResearchandDevelopmentProgramofChina

摘　　要：Flotation mechanism of kaolinite was investigated through flotation test, SEM analysis and quantum chemical simulation calculation. It is shown that the (001) face of kaolinite easily adsorb cationic collector to exhibit hydrophobicity; the (001) face is easily interacted with the reagent carrying the group of high electronegativity (-O-, -N-, F-) to show hydrophilicity. The cationic and anionic polyacrylamide are adsorbed onto the (001) face of kaolinite and the flocculation of kaolinite particles may take place; the (001) faces are exposed to interact with cationic collector to be rendered hydrophobicity. Thus, the macromolecules can evidently enhance the flotation of kaolinite in alkaline media.Flotation mechanism of kaolinite was investigated through flotation test, SEM analysis and quantum chemical simulation calculation. It is shown that the (001) face of kaolinite easily adsorb cationic collector to exhibit hydrophobicity; the (001) face is easily interacted with the reagent carrying the group of high electronegativity (-O-, -N-, F-) to show hydrophilicity. The cationic and anionic polyacrylamide are adsorbed onto the (001) face of kaolinite and the flocculation of kaolinite particles may take place; the (001) faces are exposed to interact with cationic collector to be rendered hydrophobicity. Thus, the macromolecules can evidently enhance the flotation of kaolinite in alkaline media.

关 键 词：高岭石 选矿 絮凝浮选 结晶取向 SEM 模拟计算 

分 类 号：TD923[矿业工程—选矿]