| 双水相体系从碱性氰化液中萃取分离金研究 |
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| 引用本文： | 张天喜,李文钧,吴瑾光,周维金,高宏成,陈景.双水相体系从碱性氰化液中萃取分离金研究[J].化工学报,2000,51(Z1):97-100. |
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| 作者姓名： | 张天喜 李文钧 吴瑾光 周维金 高宏成 陈景 |
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| 作者单位： | 北京大学化学与分子工程学院!北京 100871,北京大学化学与分子工程学院!北京 100871,北京大学化学与分子工程学院!北京 100871,北京大学技术物理系!北京100871,北京大学技术物理系!北京100871,昆明贵金属研究所!昆明650221 |
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| 摘 要： | 报道利用聚乙二醇（ＰＥＧ）／硫酸钠（Ｎａ２ＳＯ４）双水相体系从碱性氰化液中萃取分离金。实验考察初始水相 ｐＨ值，ＰＥＧ及 Ｎａ２ＳＯ４浓度等对 ＫＡｕ（Ｃ）２萃取影响。结果表明：富硫酸钠相（下相）的 ＫＡｕ（ＣＮ）。几乎全部转移到富 ＰＥＧ相（上相），且与ｐＨ值无关。随ＰＥＧ或Ｎａ２ＳＯ４浓度减小，金的分配系数减小。双水相萃取可能为金分离提供了一种新方法。
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EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS |
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| Zhang Tianxi,Li Wenjun,Wu Jinguang,Zhou Weijing,Gao Hongcheng and Chen Jing.EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS[J].Journal of Chemical Industry and Engineering(China),2000,51(Z1):97-100. |
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| Authors: | Zhang Tianxi Li Wenjun Wu Jinguang Zhou Weijing Gao Hongcheng and Chen Jing |
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| Affiliation: | Zhang Tianxi,Li Wenjun,Wu Jinguang,Zhou Weijing,Gao Hongcheng and Chen Jing (State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing,Department of |
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| Abstract: | The extraction of gold (Ⅰ) cyanide in polyethylene glycol-based aqueous biphasic systems has been investigated. Almost all of gold (Ⅰ) cyanide was transferred into the PEG-rich phase from salt-rich phase. No influence of solution pH on gold (Ⅰ) cyanide extraction was observed. The gold (Ⅰ) cyanide in the PEG-rich phase can be easily reduced by zinc. The PEG-rich phase could be reused for extraction of gold (Ⅰ) cyanide with no decrease of extraction capability. The aqueous biphasic systems may provide a new technique for gold separation from cyanide solutions. |
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