Abstract
The aim of this work was to study the effect of pH and potential in copper precipitation from nickel laterite leach solution. A synthetic solution was prepared to simulate the real conditions and sodium dithionite was used as reducing agent. The effect of pH was studied between pH 0.50 and 3.50. Sodium dithionite 1 mol/L was added to decrease the potential. The stirring speed was 45 rpm and reaction time was 45 min. Results indicated that copper precipitation decreased when pH increases. Copper precipitation was selective in 240 mV at pH 0.50–1.50. Co-precipitation was observed in experiments performed in pH above 2.00.
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References
Botelho Junior AB, Anes IA, Carvalho MA, Espinosa DCR, Tenório JAS (2018) Recovery of copper from nickel laterite leach waste by chemical reduction using sodium dithionite. In: Energy technology 2018. Springer International Publishing, pp 429–434
Chang Y, Zhai X, Li B, Fu Y (2010) Removal of iron from acidic leach liquor of lateritic nickel ore by goethite precipitate. Hydrometallurgy 101:84–87
Chou YH, Yu JH, Liang YM, Wang PJ, Li CW, Chen SS (2015) Recovery of Cu(II) by chemical reduction using sodium dithionite. Chemosphere 141:183–188
Chou YH, Yu JH, Liang YM, Wang PJ, Li CW, Chen SS (2015) Recovery of Cu(II) by chemical reduction using sodium dithionite: effect of pH and ligands. Water Sci Technol 72:2089–2094
Crundwell FK, Moats MS, Ramachandran V, Robinson TG, Davenport WG (2011) Extractive metallurgy of nickel, cobalt and platinum-group metals. Elsevier Ltd, Oxford
Geoffroy N, Demopoulos GP (2009) Reductive precipitation of elemental selenium from selenious acidic solutions using sodium dithionite. Ind Eng Chem Res 48(23):10240–10246
Gupta CK (2003) Chemical Metallurgy Principles and Practice. Wiley-VCH Verlag GmbH & Co. KGaA, India
Jackson E (1986) Hydrometallurgical extraction and reclamation, 1st edn. Ellis Horwood Limited, England
Jiménez Correa MM, Aliprandini P, Tenório JAS, Espinosa DCR (2016) Precipitation of metals from liquor obtained in nickel mining. In: Rewas 2016: towards materials resource sustainability. pp 333–338
McDonald RG, Whittington BI (2008) Atmospheric acid leaching of nickel laterites review. Part I. Sulphuric acid technologies. Hydrometallurgy 91:35–55
Moskalyk RR, Alfantazi AM (2002) Nickel laterite processing and electrowinning practice. Miner Eng 15(8):593–605
Mudd GM (2009) Nickel sulfide versus laterite: the hard sustainability challenge remains. In: 48th Conference of metallurgists. pp 1–10
Mudd GM (2010) Global trends and environmental issues in nickel mining: sulfides versus laterites. Ore Geol Rev 38(1–2):9–26
Oxley A, Smith ME, Caceres O (2016) Why heap leach nickel laterites? Miner Eng 88:53–60
Acknowledgements
To the São Paulo Research Foundation and Capes (Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP), grants 2012/51871-9 e n° 2017/17340-0, for the financial support through scientific initiation scholarship.
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© 2019 The Minerals, Metals & Materials Society
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Anes, I.A., Botelho Junior, A.B., Espinosa, D.C.R., Tenório, J.A.S. (2019). Effect of pH and Potential in Chemical Precipitation of Copper by Sodium Dithionite. In: Wang, T., et al. Energy Technology 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-06209-5_17
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DOI: https://doi.org/10.1007/978-3-030-06209-5_17
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