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\bibitem{Kim_etal2017} {\textquotedblleft}\textit{Process development for hydrometallurgical recovery of valuable metals from sulfide-rich residue generated in a secondary lead smelter}{\textquotedblright}. Kim E, Roosen J, Horckmans L, Spooren J, Broos K, Binnemans K, Vrancken KCM, Quaghebeur M, Hydrometallurgy \textbf{169}, 589 (2017).   http://doi.org/10.1016/J.HYDROMET.2017.04.002

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