| 应用乙二胺四乙酸二钠促进铝粉从硫代硫酸盐溶液中置换金 |
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| 引用本文： | 王治科,王全坤,叶存玲,李永芳.应用乙二胺四乙酸二钠促进铝粉从硫代硫酸盐溶液中置换金[J].有色金属工程,2013,3(2). |
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| 作者姓名： | 王治科 王全坤 叶存玲 李永芳 |
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| 作者单位： | 河南师范大学化学与环境科学学院 河南省环境污染控制重点实验室,河南师范大学化学与环境科学学院 河南省环境污染控制重点实验室,河南师范大学化学与环境科学学院 河南省环境污染控制重点实验室,河南师范大学化学与环境科学学院 河南省环境污染控制重点实验室 |
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| 基金项目： | 河南省基础与前沿技术资助项目(102300410097,122300410271),河南省高等学校青年骨干教师(2010GGJS-067),河南省创新型科技人才队伍建设工程 |
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| 摘 要： | 在分析硫氰酸盐和硫脲浸金体系氧化剂对置换回收硫氰酸盐金和硫脲金造成负面影响的根源以及克服其负面影响方案的共性特点的基础上，考察了铜离子对铝粉置换金硫代硫酸络离子的影响以及克服其抑制作用的方法。铜离子对铝粉置换金硫代硫酸络离子产生抑制作用的根源在于浸出液中铜离子的存在增加了体系的氧化还原电位。乙二胺四乙酸二钠能克服氧化剂对置换反应的抑制作用，归功于铜乙二胺四乙酸盐螯合物的生成。
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| 关 键 词： | 金 置换 硫代硫酸盐 铝粉 |
| 收稿时间： | 9/28/2012 7:56:47 AM |
Application of ethylenediamine tetraacetic acid disodium salt to enhance the cementation of gold from thiosulphate solutions by aluminum powder |
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| Wang Zhike,Wang Quankun,Ye Cunling and Li Yongfang.Application of ethylenediamine tetraacetic acid disodium salt to enhance the cementation of gold from thiosulphate solutions by aluminum powder[J].Nonferrous Metals Engineering,2013,3(2). |
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| Authors: | Wang Zhike Wang Quankun Ye Cunling and Li Yongfang |
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| Affiliation: | School of Chemistry and Environmental Science,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,School of Chemistry and Environmental Science,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,School of Chemistry and Environmental Science,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,School of Chemistry and Environmental Science,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education |
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| Abstract: | On the basis of analyzing the reasons of the negative effect of the oxidants from thiocyanate and thiourea leaching systems on the cementation of gold from the corresponding leach solution and the common characteristic of the methods to overcome the negative effects, the effect of cupric ions on the cementation of gold from thiosulphate solutions by aluminum powder and the method to overcome the inhibitory effect were investigated. The reason of the inhibitory effect of cupric ions on the cementation of gold from thiosulphate solution was that the presence of cupric ions in thiosulphate solution would increase the redox potential of the solutions. Ethylenediamine tetraacetic acid disodium salt (EDTA) was used to overcome the negative effect of cupric ion on gold cementation reaction, which is attributed to the formation of Cu(II)-EDTA complex. |
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| Keywords: | Gold Cementation Thiosulphate Aluminum powder |
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