Abstract
The surface zone of nickel laterite ore is generally considered as residue. However, because of the depletion of ore sources and the increase in demand, this previously discarded zone may now be processed economically for nickel and cobalt. After leaching and removal of the impurities, the solution contains cobalt, magnesium, manganese and nickel. Solvent extraction is a hydrometallurgical technique used in the separation of metals from aqueous solutions. Cyanex 272 and D2EHPA are extractants used to separate nickel from cobalt. The mixture of extractants can change the performance during the metals extraction. This work aims to evaluate the solvent extraction of nickel and cobalt when Cyanex 272 and D2EHPA are mixed. The results showed that the increased concentration of D2EHPA in the organic phase increased the extraction of nickel and magnesium. However, cobalt extraction was reduced and the manganese extraction was not altered.
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Acknowledgements
To the Counsel of Technological and Scientific Development (CNPq), for financial support in the form of a doctorate grant.
To the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for financial support in the form of a doctorate grant.
To the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for financial support through research project 2012/51871-9.
To Ana Carolina Fadel Dalsin, for her technical assistance in the execution of testwork for this project.
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Aliprandini, P., Jiménez Correa, M.M., Soares Tenório, J.A., Espinosa, D.C.R. (2018). Recovery of Nickel and Cobalt from a Waste Zone of Nickel Laterite Ore Using a Mixture of Extractants in Solvent Extraction Technique. In: Sun, Z., et al. Energy Technology 2018 . TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72362-4_39
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DOI: https://doi.org/10.1007/978-3-319-72362-4_39
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