| Flotation of kaolinite and its interaction with hexadecylammonium bromide |
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| 作者姓名： | 覃文庆 邱冠周 胡岳华 |
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| 作者单位： | School of Resource Processing and Bioengineering，School of Resource Processing and Bioengineering，School of Resource Processing and Bioengineering Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，Central South University，Changsha 410083，China |
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| 基金项目： | Project(G19990 64 90 1)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina |
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| 摘 要： | 1 INTRODUCTIONAshasbeenextensivelydiscussedinRef .1],theselectiveseparationofbauxiteisextremelycom plexinseveralcases ,theproblemsinvolvedarenotyetfullyresolved .Thetechnologicalschemesofposi tive flotationorreverse flotationseparationofalu minum silicatemineralsfromdiasporicbauxiteweresuggested2 ,3] .The positive flotationseparationofbauxiteisfinishedbydepressingaluminumsilicateganguemineralssuchasillite ,kaoliniteandpy rophillite,andusesanioniccollectorstofloatdias pore .Phosphate ,s…
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Flotation of kaolinite and its interaction with hexadecylammonium bromide |
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| QIN Wen qing,QIU Guan zhou,HU Yue hua.Flotation of kaolinite and its interaction with hexadecylammonium bromide[J].Transactions of Nonferrous Metals Society of China,2003,13(3). |
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| Authors: | QIN Wen qing QIU Guan zhou HU Yue hua |
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| Abstract: | The electrokinetic and flotation of kaolinite in solution of hexadecylammonium bromide were studied. The point of zero charge (PZC) of kaolinite was determined by measuring zeta potential (streaming potential method) as a function of pH. Hexadecylammonium bromide ion seems to be strongly adsorbed on the interface because it makes the zeta potential more positive as the concentration increases. The PZC of kaolinite is at pH 4.3. Floatability of kaolinite was studied and shown to be influenced by both collector and hydrogen ion concentration. The optimal flotation conditions (mainly pH value and concentrations) observed experimentally agree well with that of predicted from solution chemistry, and the floatability of kaolinite is poor if the pH value of flotation system is higher than 9 or lower than 2. |
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| Keywords: | flotation hexadecylammonium bromide kaolinite |
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