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Hydrometallurgical recovery of zinc, manganese and lead from pyrometallurgy sludge.


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Mocellin, Julien; Simonnot, Marie-Odile; Mercier, Guy; Blais, Jean-François ORCID logoORCID: https://orcid.org/0000-0003-3087-4318 et Morel, Jean-Louis (2015). Hydrometallurgical recovery of zinc, manganese and lead from pyrometallurgy sludge. In: 45th Annual Hydrometallurgy Meeting, The Metallurgy and Materials Society of CIM - COM 2015, 23-26 août 2015, Toronto, Canada.

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Large quantities of ferromanganese sludge are generated as waste material by blast furnace during the manufacturing of ferromanganese. These slags are very rich in manganese, zinc and lead (5 to 40 %). These residues have been deposited in a pond in periphery of the steel industry. Considering the market value of the metals, these brownfield sites can now be considered as secondary resources. We have developed a hydrometallurgical process for selectively leaching Zn, Mn and Pb in order to produce compounds of Mn and Zn pure enough to be economically recoverable and a residue rich in Pb. Batch laboratory experiments were carried out to determine appropriate leaching conditions to maximize zinc extraction (100 %) and manganese extraction (90.0 %) with sulfuric acid and to generate a residue containing 15 to 30% of lead. This Pb residue is recyclable by another process.

Type de document: Document issu d'une conférence ou d'un atelier
Mots-clés libres: manganese; zinc; lead; hydrometallurgy; recovery; ferromanganese; residue
Centre: Centre Eau Terre Environnement
Date de dépôt: 09 déc. 2019 21:08
Dernière modification: 18 févr. 2022 20:24
URI: https://espace.inrs.ca/id/eprint/4759

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