WO2023156448 - PROCESS FOR THE RECOVERY OF LI, NI AND CO
National phase entry:
Publication Number
WO/2023/156448
Publication Date
24.08.2023
International Application No.
PCT/EP2023/053742
International Filing Date
15.02.2023
Title **
[English]
PROCESS FOR THE RECOVERY OF LI, NI AND CO
[French]
PROCÉDÉ DE RÉCUPÉRATION DE LI, NI ET CO
Applicants **
UMICORE
Rue du Marais 31
1000 Brussels, BE
Inventors
VERHEES, Pieter
Umicore
Watertorenstraat 33
2250 Olen, BE
BALTES, Michael
Umicore
Watertorenstraat 33
2250 Olen, BE
Priority Data
22157033.6
16.02.2022
EP
Application details
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| Pages of Specification | * |
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International Searching Authority |
EPO
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| Applicant's Legal Status |
Legal Entity
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| * | |
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| Entry into National Phase under |
Chapter II
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1103 | |
| EPO | Filing, Examination | 4636 | |
| Japan | Filing | 595 | |
| South Korea | Filing | 574 | |
| USA | Filing, Examination | 2710 |
Total: 9618 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
Process for the separation of Li from oxides of one or more of Co and Ni contained in a feed, comprising the steps of: contacting, in aqueous medium, the feed with a quantity of sulfidizing agent, sufficient to convert a major part of the Co and/or Ni to sulfides, and a quantity of mineral acid sufficient to reach a pH of 1 to 5, thereby forming an aqueous slurry containing solid Co and/or Ni sulfides, and a solution containing Li; and, separating the solids from the solution, thereby obtaining solids containing Co and/or Ni sulfides, and a solution containing a major part of the Li. This process allows to convert Co and Ni to solid sulfides and at the same time to efficiently separate them from soluble compounds such as Li, Mn and other impurities.[French]
La présente invention concerne un procédé de séparation de Li des oxydes d'un ou plusieurs de Co et Ni contenus dans une charge, comprenant les étapes consistant à : mettre en contact, en milieu aqueux, la charge avec une quantité d'agent de sulfuration, suffisante pour convertir une majeure partie du Co et/ou Ni en sulfures, et une quantité d'acide minéral suffisante pour atteindre un pH de 1 à 5, formant ainsi une suspension aqueuse contenant des sulfures de Co et/ou de Ni solides, et une solution contenant du Li; et séparer les solides de la solution, ce qui permet d'obtenir des solides contenant des sulfures de Co et/ou de Ni, et une solution contenant une majeure partie du Li. Ce procédé permet de convertir du Co et du Ni en sulfures solides et en même temps de les séparer efficacement de composés solubles tels que Li, Mn et d'autres impuretés.