| Fe^3＋（Al^3＋）-EDTA—H2O体系水解平衡的研究及应用 |
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| 引用本文： | 陈敬阳,刘志强,陈怀杰,李杏英.Fe^3＋（Al^3＋）-EDTA—H2O体系水解平衡的研究及应用[J].广东有色金属学报,2007,1(2):136-139. |
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| 作者姓名： | 陈敬阳 刘志强 陈怀杰 李杏英 |
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| 作者单位： | [1]湖南株冶火炬金属公司,湖南株洲412004 [2]广州有色金属研究院,广东广州510650 |
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| 摘 要： | 应用平衡原理和质量守恒原理对Fe^3＋（Al^3＋）-EDTA-H2O体系进行了分析和计算，并绘制了Fe^3＋（Al^3＋）-EDTA-H2O体系在标准状态下溶液中铁、铝的浓度与pH的关系曲线．分析结果表明，在该体系中通过控制EDTA含量和pH可将铝沉淀，而铁以配合物的形式存在溶液中，从而达到除铁的目的．采用该法可制得铁质量分数小于0．002％的高纯氧化铝．
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| 关 键 词： | Fe^3＋（Al^3＋）-EDTA-H2O体系 水解 除铁 |
| 文章编号： | 1673-9981（2007）02-0136-04 |
| 收稿时间： | 2006-05-26 |
The application and study on hydrolysis of Fe~(3+)(Al~(3+))-EDTA-H_2O |
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| CHEN Jing-yang , LIU Zhi-qiang , CHEN Huai-jie , LI Xing-ying.The application and study on hydrolysis of Fe~(3+)(Al~(3+))-EDTA-H_2O[J].Journal of Guangdong Non-Ferrous Metals,2007,1(2):136-139. |
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| Authors: | CHEN Jing-yang LIU Zhi-qiang CHEN Huai-jie LI Xing-ying |
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| Abstract: | The system of Fe3+(Al3+)-EDTA-H2O is analyzed and calculated by conservation of mass and simultaneous equilibrium principles.Relation curves between concentration of Fe3+(Al3+),EDTA and value of pH are painted at standard state,The curves indicate that Al3+ can be precipitated by controlling concentration of EDTA and value of pH,but Fe3+ is still remaining in solution as complex.This principle is proved by experiment,which can be used to preparing high purity aluminum oxide containing less 0.002% of iron mass fraction. |
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| Keywords: | Fe3+(Al3+)-EDTA-H2O hydrolysis removal of iron |
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