Recovery of Yttrium and Neodymium from Copper Pregnant Leach Solutions by Solvent Extraction

Persistent Link:
http://hdl.handle.net/10150/595982
Title:
Recovery of Yttrium and Neodymium from Copper Pregnant Leach Solutions by Solvent Extraction
Author:
Copp, Rebecca
Issue Date:
2016
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The solvent extraction of yttrium and neodymium from copper pregnant leach solutions (PLS) using Primene JM-T, a primary aliphatic amine, has been studied. Effect of contact time, pH, sulfate concentration, and extractant concentration were investigated using synthetic and actual PLS systems. Standard experimental conditions were 5 minute contact time, pH ~2.5, 10% v/v Primene JM-T concentration, and 1:1 O:A phase ratio. Distribution isotherms were constructed for the pure systems and for actual copper leach solutions. Synthetic solutions contained 100 ppm Y and ~75 ppm Nd. Copper PLS contained 2.1 ppm Nd and 14.9 ppm Y. Results showed that complete extraction of both yttrium and neodymium occurred within five minutes and at pH values greater than 1. It was also found that sulfate concentration does not inhibit extraction at any concentration. Additionally, the distribution isotherms created show that extraction for these metals can operationally take place in one stage from both synthetic solutions and copper leach solutions.
Type:
text; Electronic Thesis
Keywords:
PLS; Solvent Extraction; Yttrium; Mining Geological & Geophysical Engineering; Neodymium
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Mining Geological & Geophysical Engineering
Degree Grantor:
University of Arizona
Advisor:
Hiskey, J. Brent

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleRecovery of Yttrium and Neodymium from Copper Pregnant Leach Solutions by Solvent Extractionen_US
dc.creatorCopp, Rebeccaen
dc.contributor.authorCopp, Rebeccaen
dc.date.issued2016en
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractThe solvent extraction of yttrium and neodymium from copper pregnant leach solutions (PLS) using Primene JM-T, a primary aliphatic amine, has been studied. Effect of contact time, pH, sulfate concentration, and extractant concentration were investigated using synthetic and actual PLS systems. Standard experimental conditions were 5 minute contact time, pH ~2.5, 10% v/v Primene JM-T concentration, and 1:1 O:A phase ratio. Distribution isotherms were constructed for the pure systems and for actual copper leach solutions. Synthetic solutions contained 100 ppm Y and ~75 ppm Nd. Copper PLS contained 2.1 ppm Nd and 14.9 ppm Y. Results showed that complete extraction of both yttrium and neodymium occurred within five minutes and at pH values greater than 1. It was also found that sulfate concentration does not inhibit extraction at any concentration. Additionally, the distribution isotherms created show that extraction for these metals can operationally take place in one stage from both synthetic solutions and copper leach solutions.en
dc.typetexten
dc.typeElectronic Thesisen
dc.subjectPLSen
dc.subjectSolvent Extractionen
dc.subjectYttriumen
dc.subjectMining Geological & Geophysical Engineeringen
dc.subjectNeodymiumen
thesis.degree.nameM.S.en
thesis.degree.levelmastersen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineMining Geological & Geophysical Engineeringen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorHiskey, J. Brenten
dc.contributor.committeememberHiskey, J. Brenten
dc.contributor.committeememberLee, Jaeheonen
dc.contributor.committeememberZhang, Jinhongen
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