| 光谱学与光谱分析 |
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| EXAFS Study on the Stripping Mechanism in N263/Alkaline Cyanide Gold Solution/Sulfuric Thiourea System |
| TANG Hong-ping1, YANG Ming-de1, HE Pei-jiong1，HU Tian-dou2, ZHANG Jing2, XIE Ya-ning2 |
1. Institute of Nuclear Energy and Technology, Tsinghua University, Beijing 102201，China
2. Electron Positron Collider National Laboratory, Beijing 100039，China |
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Abstract Quaternary ammonium salt has strong affinity with gold in cyanide solutions, but it is not readily stripped. Stripping with acidic thiourea solutions and air sparging shows promise. There are some reports on the process of thiourea stripping, but little about its mechanism. In this paper, the stripping mechanism of N263/sulphuric thiourea/alkaline cyanide gold solution is studied by EXAFS. According to the experiments, sulphuric acid, thiourea and gold-thiourea complex can be extracted by N263 as a neutral molecule, and the stripping process can be described as following: (1) Sulphuric acid and thiourea are extracted by N263; (2) In organic phase, gold-cyanide complex is converted to gold-thiourea complex, which exists as Au[SC(NH2)2]2HSO4, and CN- forms HCN with acid at the same time; (3) HCN is removed by air sparging, and Au[SC(NH2)2]2HSO4 is distributed between organic phase and liquor phase, most of which transfers to liquor phase and is stripped.
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Received: 2002-06-11
Accepted: 2002-12-08
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Corresponding Authors:
TANG Hong-ping
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| Cite this article: |
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TANG Hong-ping,YANG Ming-de,HE Pei-jiong, et al. EXAFS Study on the Stripping Mechanism in N263/Alkaline Cyanide Gold Solution/Sulfuric Thiourea System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(06): 752-755.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I06/752 |
[1] YAN Wen-fei, MA Gang, YAN Chun-hua et al. (闫文飞, 马 刚, 严纯华等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 1999, 19(6): 807.
[2] Riveros P A. Hydrometallurgy, 1990, 24: 135.
[3] MA Gang, YAN Wen-fei, CHEN Jing et al. Solvent Extraction and ion Exchange, 2000, 18(6)： 1179.
[4] ZHOU Zhan-yun, FU Jian-shun, WU Zhi-quan et al(周展云, 傅建顺, 吴志泉等). Precious Metals(贵金属)，1991, 12(2): 11.
[5] XU Guang-xian, WANG Wen-qing, WU Jin-guang et al(徐光宪, 王文清, 吴瑾光等). Extractive Chemistry Principles(萃取化学原理). Shanghai: Shanghai Science and Technology Press(上海: 上海科学技术出版社)，1982. 121.
[6] MA Li-dun, YAN Fu-jia(马礼敦, 杨福家). Introduction to Synchroton Radiation Application(同步辐射应用概论). Shanghai: Fudan University Press(上海： 复旦大学出版社), 2001.
[7] Syers D E，Bunker B A. X-ray Absorption, Principles, Applications: Techniques of EXAFS, SEXAFS and XANES.In Chemical Analysis, edited by Koningsberger D C and Prins R. John Wiley and Sons, Inc.，1988.
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