| Aluminum-silicates flotation with quaternary ammonium salts |
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| 作者姓名： | 王毓华 胡岳华 陈湘清 |
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| 作者单位： | School of Resources Processing and Bioengineering，School of Resources Processing and Bioengineering，School of Resources 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 INTRODUCTIONThediasporic bauxiteinChinaisdifferentfromthegibbsite bauxiteandboehmite bauxiteinothercountriesbyitshighcontentofAl2 O3andSiO2 andlowmassratioofAl2 O3toSiO2 (massratioofAl2 O3toSiO2 =A/S ,usually5 6 ) .Theproductioncostofa luminumoxidefromsuchrefractorybauxiteby“sin tering”or“combining”technologiesismuchhigherthanthatbyBayer sprocess .Sothatthealuminum silicateganguessuchaspyrophyllite ,illiteandkaolin iteinthebauxiteisneededtoberemovedtoincreaseA/S .Hussainetal…
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Aluminum-silicates flotation with quaternary ammonium salts |
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| WANG Yu hua,HU Yue hua,CHEN Xiang qing.Aluminum-silicates flotation with quaternary ammonium salts[J].Transactions of Nonferrous Metals Society of China,2003,13(3). |
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| Authors: | WANG Yu hua HU Yue hua CHEN Xiang qing |
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| Abstract: | The zeta potential measurements show that the flotation separation of diaspore from kaolinite, illite and pyrophyllite could be achieved in the range of pH 46.5 with cationic collectors. A special quaternary ammonium salts(DTAL) shows better selectivity than that the dodecyl amine(DDA) does for the flotation of three silicates. The closed circuit flotation results show that the reverse flotation de silicate can be achieved with DTAL as collector, a new inorganic reagent(SFL) as depressant and MIBC as frother to obtain a bauxite concentrate m (Al 2O 3)/ m (SiO 2) >10, Al 2O 3 recovery>86%). |
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| Keywords: | aluminum silicates diasporic bauxite reverse flotation quaternary ammonium salts |
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