WO2026057846 - CONTROLLED AUTOCLAVE DISSOLUTION OF METAL POWDERS FOR PRODUCING HIGH-PURITY METAL SULPHATE SOLUTIONS
National phase entry is expected:
Publication Number
WO/2026/057846
Publication Date
19.03.2026
International Application No.
PCT/EP2025/076235
International Filing Date
15.09.2025
Title **
[English]
CONTROLLED AUTOCLAVE DISSOLUTION OF METAL POWDERS FOR PRODUCING HIGH-PURITY METAL SULPHATE SOLUTIONS
[French]
DISSOLUTION CONTRÔLÉE EN AUTOCLAVE DE POUDRES MÉTALLIQUES POUR LA PRODUCTION DE SOLUTIONS DE SULFATE MÉTALLIQUE DE HAUTE PURETÉ
Applicants **
UMICORE
Inventors
BOONE, Michael
DE KOCK, Felix
FURRER, Rudy
PRETORIUS, Patrius
NEVEN, Margot
Priority Data
24200497.6
16.09.2024
EP
Application details
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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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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2053 | |
| EPO | Filing, Examination, Granting | 8624 | |
| Japan | Filing, Examination, Granting | 2183 | |
| South Korea | Filing, Examination, Granting | 2133 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,733
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Abstract[English]
The present invention provides a controlled autoclave dissolution of metal powders for producing high-purity metal sulphate solutions, comprising the steps of: a. reacting an aqueous slurry comprising a metal powder with sulphuric acid in an autoclave section comprising one or more autoclave reactors at a temperature between 100°C and 250°C, thereby forming a metal sulphate solution having a residual amount of metal powder, whereby the molar ratio of sulphuric acid and metal in said autoclave section is lower than 1.0; and b. separating said metal sulphate solution from said residual metal powder.[French]
La présente invention concerne une dissolution contrôlée en autoclave de poudres métalliques pour la production de solutions de sulfate métallique de haute pureté, comprenant les étapes consistant à : a. faire réagir une suspension aqueuse comprenant une poudre métallique avec de l'acide sulfurique dans une section d'autoclave comprenant un ou plusieurs réacteurs de type autoclave à une température comprise entre 100 °C et 250 °C, formant ainsi une solution de sulfate métallique ayant une quantité résiduelle de poudre métallique, le rapport molaire de l'acide sulfurique et du métal dans ladite section d'autoclave étant inférieur à 1,0 ; et b. séparer ladite solution de sulfate métallique de ladite poudre métallique résiduelle.