| 粉煤灰硫酸浸出液中钛和铁的萃取分离 |
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| 引用本文： | 薛茹君.粉煤灰硫酸浸出液中钛和铁的萃取分离[J].应用化学,2011,28(7):804-808. |
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| 作者姓名： | 薛茹君 |
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| 作者单位： | (安徽理工大学化工学院 淮南 232001) |
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| 基金项目： | 安徽省教育厅重大科研项目 |
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| 摘 要： | 将粉煤灰的硫酸浸出液，用氨水调节pH值后，用三正辛基氧膦-煤油、磷酸二异辛酯-煤油萃取分离溶液中的Ti4+和Fe3+。 考察了萃取剂、水相阳离子浓度、pH值及萃取温度和时间等实验条件对萃取率的影响；讨论了萃取剂再生条件对提取率及分离产物纯度的影响。 用XRD表征了反萃取煅烧产物的物相组成，用X射线荧光分析测定了煅烧产物TiO2和Fe2O3的纯度。 分析结果表明，钛的萃取率达到97%，提取率＞92%；铁的萃取率达到97%，提取率达到96%；TiO2 和Fe2O3的纯度分别为98%和97%，均可以用作涂料的颜料。
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| 关 键 词： | 粉煤灰 Ti4+ 三正辛基氧膦 磷酸二异辛酯 萃取 |
| 收稿时间： | 2010-09-13 |
| 修稿时间： | 2010-10-26 |
Extraction and Separation of Titanium and Iron with Sulfuric Acid Leaching of Fly Ash |
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| XUE Rujun.Extraction and Separation of Titanium and Iron with Sulfuric Acid Leaching of Fly Ash[J].Chinese Journal of Applied Chemistry,2011,28(7):804-808. |
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| Authors: | XUE Rujun |
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| Institution: | (School of Chemical Engineering and Technology,Anhui University of ;
Science and Technology,Huainan 232001) |
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| Abstract: | By adjusting the pH of the H2SO4 leaching liquor of fly ash,Ti4+ and Fe3+ were extract-separated with trioctylphosphineoxide(TOPO)-kerosene and di(2-ethylhexyl) phosphoric acid(P204)-kerosene,respectively.Effects of the extractants,the concentration of the cations,pH of the aqueous solution,extracting temperature,and extracting time on the extracting efficiency were investigated.Effect of the recycle conditions of the loaded extractants on the recovery yield and the purity of recovered products were discuss... |
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| Keywords: | fly ash Ti4 Fe3 trioctylphosphineoxide di(ethylhexyl) phosphoric acid extraction |
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