Differential precipitation of copper and nickel from acidic polymetallic aqueous solutions

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dc.contributor.author Giannopoulou, I en
dc.contributor.author Panias, D en
dc.date.accessioned 2014-03-01T01:28:09Z
dc.date.available 2014-03-01T01:28:09Z
dc.date.issued 2008 en
dc.identifier.issn 0304-386X en
dc.identifier.uri http://hdl.handle.net/123456789/18735
dc.subject Acidic sulphide solutions en
dc.subject Copper en
dc.subject Neutralization en
dc.subject Nickel en
dc.subject Precipitation en
dc.subject.classification Metallurgy & Metallurgical Engineering en
dc.subject.other Caustic soda en
dc.subject.other Precipitation (chemical) en
dc.subject.other Solutions en
dc.subject.other Sulfuric acid en
dc.subject.other Wastewater en
dc.subject.other Acidic polymetallic solutions en
dc.subject.other Copper sulfate en
dc.subject.other Economic recession en
dc.subject.other Copper smelting en
dc.title Differential precipitation of copper and nickel from acidic polymetallic aqueous solutions en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.hydromet.2007.10.004 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.hydromet.2007.10.004 en
heal.language English en
heal.publicationDate 2008 en
heal.abstract During the pyrometallurgical treatment of copper concentrates several wastes (gaseous, solid and liquid) are generated. Wastewaters produced in a primary copper smelter are acidic polymetallic solutions characterized by intermediate to high sulphuric acid concentration. Additionally, they usually contain large quantities of valuable metals, such as Cu and Ni, as well as impurities, such as Pb, Zn, Fe, As, Sb, Bi, etc. Therefore, recovery of valuable metals from acidic polymetallic aqueous solutions is of great importance for every plant. This paper is dealing with the recovery of copper and nickel from the acidic polymetallic solutions generated in the copper smelter at Bor, Serbia. The process of differential precipitation of metals through neutralization with caustic soda was selected as the treatment alternative that combines simplicity, efficiency and reliability with low capital and maintenance costs. The concept was based on the development of a simple and efficient process that could be more attractive for industries located in countries suffering from economic recession. Theoretical analysis and experimental results showed that copper and nickel can be differentially removed from the acidic polymetallic solutions at pH = 7 and pH = 10, respectively, mainly contaminated by arsenic, which occurs at high concentrations in acidic polymetallic solutions. Both metals were precipitated as hydroxides, although a small portion of copper was removed also as copper sulfate salt. The resulted precipitates are rich in copper and nickel and can be recycled in copper, as well as in nickel smelters. © 2007 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE BV en
heal.journalName Hydrometallurgy en
dc.identifier.doi 10.1016/j.hydromet.2007.10.004 en
dc.identifier.isi ISI:000253804000007 en
dc.identifier.volume 90 en
dc.identifier.issue 2-4 en
dc.identifier.spage 137 en
dc.identifier.epage 146 en

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