Recovery of Ni, Mo, Co from the copper slag processed by flotation at Aurubis slag flotation plant
Bertoglio Larrondo, Silvanna Paola
Promoteur(s) : Gaydardzhiev, Stoyan
Date de soutenance : 24-aoû-2018 • URL permanente : http://hdl.handle.net/2268.2/7255
Détails
Titre : | Recovery of Ni, Mo, Co from the copper slag processed by flotation at Aurubis slag flotation plant |
Auteur : | Bertoglio Larrondo, Silvanna Paola |
Date de soutenance : | 24-aoû-2018 |
Promoteur(s) : | Gaydardzhiev, Stoyan |
Membre(s) du jury : | Chagnes, Alexandre
Pirard, Eric Nguyen, Frédéric Kadiyski, Milen Stoilov, Viktor |
Langue : | Anglais |
Nombre de pages : | 156 |
Discipline(s) : | Ingénierie, informatique & technologie > Géologie, ingénierie du pétrole & des mines |
Institution(s) : | Université de Liège, Liège, Belgique |
Diplôme : | Master en ingénieur civil des mines et géologue, à finalité spécialisée en "geometallurgy (EMERALD)" |
Faculté : | Mémoires de la Faculté des Sciences appliquées |
Résumé
[fr] This work was focused on recovery metals such as Co, Ni and Mo from slags that have been treated previously by flotation.
At the very beginning a characterization of the material showed how the metals of interest occur in the slag, giving an initial indication on how to orient the research. Then, a series of treatments options were executed and their processing variables studied.
Two processing routes were suggested, both aiming to suggest a process which valorize the valuable metals, minimize waste production and at the same time can be economically feasible.
The double Sulphation- Leaching route proposed forms a selective process that allows to separate iron in advance and obtain acceptable recoveries for Cu, Ni and Co. In a very first economic analysis it looks as a feasible and promising option.
The second suggested processing method is a two stages Sulphation process coupled with a carbothermic reduction of the solid residue coming from the second stage leaching. This process reduces overall waste generation by yielding 4 different products that are possibly marketable in different industries.
These proposals are in line with the circular economy concept, which is on the agenda of modern industrialized society.
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