EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS

张天喜; 李文钧; 吴瑾光; 周维金; 高宏成; 陈景

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EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS

更新时间：2025-12-16

- EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS
- CIESC Journal Issue S1, (2000)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC： 658
- Online First：30 December 2000，
  
  Published：30 December 2000
- 稿件说明：
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张天喜, 李文钧, 吴瑾光, et al. EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS[J]. CIESC Journal, 2000, (S1).
DOI：

张天喜, 李文钧, 吴瑾光, et al. EXTRACTION OF AU(CN)_2~- FROM CYANIDE SOLUTIONS USING AQUEOUS BIPHASIC SYSTEMS[J]. CIESC Journal, 2000, (S1). DOI：

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。

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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