自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 13    No. 6    December 2006

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Degradation of Lix984N and its effect on interfacial emulsion
LIU Xiao-rong(刘晓荣)1,QIU Guan-zhou(邱冠周)2,HU Yue-hua(胡岳华) 2

1.Department of Materials Engineering,Shanghai Institute of Technology,
Shanghai 200233,China;
2.School of Resources Processing and Bioengineering,Central South University,Changsha 410083,China

Abstract:The organic phase separated from the interfacial crud provided by Dexing copper mine in Jiangxi,China,was analyzed by combined gas chromatography-mass spectroscopy.The results show that many kinds of emphiphiles containing such hydrophilic groups as carbonyl,carboxyl,sulphonyl or acylamine exist in organic phase.Conclusively, Lix984N would degrade gradually during a long-term contact with the acidic aqueous feed and strip reagents.Lix84 and nonylphenol as effective components of Lix984N degraded almost completely after long-term recycling.Lix984N degraded through such reactions as Beckmann rearrange,hydrolysis and sulphofication.The degradation of Lix984N would deteriorate solvent extraction and disengagement performance,and result in a more stable interfacial emulsion.

 

Key words: interfacial emulsion;degradation;Lix984N;copper solvent extraction

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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