WO2025202333 - ENVIRONMENTALLY BENIGN METHOD FOR REMOVING URANIUM AND/OR SCANDIUM FROM NICKEL- AND/OR COBALT-CONTAINING RESOURCES
National phase entry is expected:
Publication Number
WO/2025/202333
Publication Date
02.10.2025
International Application No.
PCT/EP2025/058339
International Filing Date
26.03.2025
Title **
[English]
ENVIRONMENTALLY BENIGN METHOD FOR REMOVING URANIUM AND/OR SCANDIUM FROM NICKEL- AND/OR COBALT-CONTAINING RESOURCES
[French]
PROCÉDÉ RESPECTUEUX DE L'ENVIRONNEMENT PERMETTANT D'ÉLIMINER L'URANIUM ET/OU LE SCANDIUM DE RESSOURCES CONTENANT DU NICKEL ET/OU DU COBALT
Applicants **
UMICORE
Inventors
VERDICKT, Werner
VEREYCKEN, Willem
ROOSEN, Joris
Priority Data
24167018.1
27.03.2024
EP
25151296.8
10.01.2025
EP
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2046 | |
| EPO | Filing, Examination, Granting | 8293 | |
| Japan | Filing, Examination, Granting | 2061 | |
| South Korea | Filing, Examination, Granting | 1916 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,056
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Abstract[English]
The present invention concerns an environmentally benign method for removal of uranium and/or scandium from nickel- and/or cobalt-containing resources, comprising the steps of: i. leaching a solid material feed comprising uranium and/or scandium, and at least 20 wt% of at least one of nickel and cobalt, with a mineral acid in an aqueous medium, thereby obtaining a leachate solution comprising uranium and/or scandium ions, and at least one of nickel ions and cobalt ions, ii. precipitating at least in part uranium and/or scandium, by adding a phosphate compound and bringing the pH of said leachate solution to at least 2.5, and separating the precipitate from the aqueous medium; iii. extracting the remaining uranium and/or scandium, from the aqueous filtrate obtained in step ii. into an organic phase comprising an extractant and a diluent, thereby obtaining an aqueous raffinate comprising at least one of nickel ions and cobalt ions.[French]
La présente invention concerne un procédé respectueux de l'environnement pour l'élimination de l'uranium et/ou du scandium dans des ressources contenant du nickel et/ou du cobalt, comprenant les étapes consistant à : i. lixivier une charge de matériau solide comprenant de l'uranium et/ou du scandium, et au moins 20 % en poids de nickel et/ou de cobalt, avec un acide minéral dans un milieu aqueux, ce qui permet d'obtenir une solution de lixiviat comprenant des ions uranium et/ou scandium, et des ions nickel et/ou des ions cobalt ; ii. faire précipiter au moins en partie l'uranium et/ou le scandium en ajoutant un composé de phosphate et en amenant le pH de ladite solution de lixiviat à au moins 2,5, et séparer le précipité du milieu aqueux ; iii. extraire l'uranium et/ou le scandium restant à partir du filtrat aqueux obtenu à l'étape ii. dans une phase organique comprenant un agent d'extraction et un diluant, ce qui permet d'obtenir un raffinat aqueux comprenant des ions nickel et/ou des ions cobalt.