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Nature of (001) and (00) faces and flocculation flotation of kaolinite 被引量:2

Nature of (001) and (00) faces and flocculation flotation of kaolinite
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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.
出处 《中国有色金属学会会刊:英文版》 CSCD 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
关键词 高岭石 选矿 絮凝浮选 结晶取向 SEM 模拟计算 cleavage face flotation modified macromolecule flocculation kaolinite
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