NON-DISPERSIVE SOLVENT EXTRACTION OF COPPER FROM AMMONIACAL SOLUTIONS

The aim of this study was to check the feasibility of non-dispersive solvent extraction to recover copper from ammoniacal solutions using hollow fibres as contactors. Data of mass transfer using the ®-diketone LIX 54 as an extractant was obtained. The influence of tube and shell hydrodynamics on the...

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Published inCanadian metallurgical quarterly Vol. 47; no. 3; pp. 301 - 306
Main Authors GAMEIRO, M.L.F., ISMAEL, M.R.C., REIS, M.T.A., CARVALHO, J.M.R.
Format Journal Article
LanguageEnglish
Published Taylor & Francis 2008
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Summary:The aim of this study was to check the feasibility of non-dispersive solvent extraction to recover copper from ammoniacal solutions using hollow fibres as contactors. Data of mass transfer using the ®-diketone LIX 54 as an extractant was obtained. The influence of tube and shell hydrodynamics on the extraction rate of copper was studied. The overall mass transfer coefficient of copper was calculated from the experimental data by performing steady state material balance. Simultaneous extraction and stripping experiments were carried out using different volume ratios of feed phase to stripping phase. The results obtained showed that practically all the copper content was removed from the ammoniacal feed solutions. The recovery of copper reached nearly 100% in several extraction-stripping experiments. Le but de cette étude était de vérifier la faisabilité d'extraction par solvant non-dispersif pour la récupération du cuivre de solutions ammoniacales en utilisant des fibres creuses comme contacteurs. On a obtenu les données de transfert de masse en utilisant la dicétone-® LIX 54 comme agent d'extraction. On a étudié l'influence de l'hydrodynamique du tube et de l'enveloppe sur la vitesse d'extraction du cuivre. On a calculé le coefficient global de transfert de masse du cuivre à partir des données expérimentales en effectuant une balance de matériel en régime permanent. On a effectué des expériences simultanées d'extraction et de lavage en utilisant différentes proportions de phase d'alimentation et de lavage. Les résultats obtenus montraient que pratiquement tout le cuivre était enlevé des solutions ammoniacales d'alimentation. La récupération du cuivre atteignait presque 100% dans plusieurs expériences d'extraction-lavage.
Bibliography:ObjectType-Article-2
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ISSN:0008-4433
1879-1395
DOI:10.1179/cmq.2008.47.3.301