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Solvent Extraction and Ion Exchange Volume 18, 2000 - Issue 6
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Original Articles

STRIPPING OF GOLD FROM QUATERNARY AMINE EXTRACTION SYSTEMS

Gang Ma State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
,
Wenfei Yan State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
,
Jing Chen Institute of Precious Metals, Kunming, 650221, China
,
Weijin Zhou Department of Technical Physics, Peking University, Beijing, 100871, China
,
Jinguang Wu State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
&
Guangxian Xu State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
Pages 1179-1187 | Received 21 Mar 2000, Published online: 10 May 2007
 
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ABSTRACT

A new procedure based on the use of sodium perchlorate (NaC1O4) and saturated potassium chloride (KCl) solutions for gold stripping from quaternary amine extraction systems is proposed for the first time. In this procedure, the stripping of Au(CN)2 − is accomplished by the ClO4 − ions in the first step, and the regeneration of quaternary amine is achieved by Cl− ions in the second step.

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