WO2023099424 - A METHOD FOR IRON AND COPPER REMOVAL FROM SOLUTION USING METALLIC REAGENTS
National phase entry:
Publication Number
WO/2023/099424
Publication Date
08.06.2023
International Application No.
PCT/EP2022/083560
International Filing Date
29.11.2022
Title **
[English]
A METHOD FOR IRON AND COPPER REMOVAL FROM SOLUTION USING METALLIC REAGENTS
[French]
PROCÉDÉ D’ÉLIMINATION DE FER ET DE CUIVRE À PARTIR D'UNE SOLUTION À L'AIDE DE RÉACTIFS MÉTALLIQUES
Applicants **
UMICORE
Rue du Marais 31
1000 Brussels, BE
Inventors
KLAASEN, Bart
Umicore
Watertorenstraat 33
2250 Olen, BE
Priority Data
21211405.2
30.11.2021
EP
Application details
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International Searching Authority |
EPO
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter II
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1094 | |
| EPO | Filing, Examination | 4588 | |
| Japan | Filing | 590 | |
| South Korea | Filing | 574 | |
| USA | Filing, Examination | 2710 |
Total: 9556 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
The present disclosure concerns a process for the removal of Cu and Fe from an acidic aqueous solution further containing one or more of Ni and Co, comprising the steps of: - adding a metallic reagent comprising one or more of Ni and Co to the acidic solution, in oxidizing conditions, thereby neutralizing the acidic solution, and forming a precipitate comprising Cu and Fe, wherein at least part of the Cu and Fe is in the form of a hydroxide; and, - separating the Cu and Fe precipitate from the solution, thereby obtaining a solution depleted in Cu and Fe. The process drastically reduces the need for foreign neutralizing agents, thereby restricting or even completely avoiding the introduction of additional impurities into the process. It is advantageously applied on an acidic aqueous solution obtained by leaching materials having the same composition as the metallic reagent.[French]
La présente divulgation concerne un procédé d'élimination de Cu et de Fe à partir d'une solution aqueuse acide contenant en outre un ou plusieurs éléments parmi Ni et Co, comprenant les étapes consistant à : ajouter un réactif métallique comprenant un ou plusieurs éléments parmi Ni et Co à la solution acide, dans des conditions d'oxydation, neutralisant ainsi la solution acide, et formant un précipité comprenant Cu et Fe, au moins une partie du Cu et du Fe étant sous la forme d'un hydroxyde ; et séparer le précipité de Cu et de Fe de la solution, ce qui permet d'obtenir une solution appauvrie en Cu et Fe. Le procédé réduit considérablement le besoin d'agents de neutralisation étrangers, limitant ainsi ou même évitant complètement l'introduction d'impuretés supplémentaires dans le procédé. Il est avantageusement appliqué sur une solution aqueuse acide obtenue par lixiviation de matériaux ayant la même composition que le réactif métallique.