WO2025229293 - A METHOD OF TREATING A PLATINUM GROUP METAL CONTAINING LIQUOR TO REMOVE ARSENIC
National phase entry is expected:
Publication Number
WO/2025/229293
Publication Date
06.11.2025
International Application No.
PCT/GB2025/050692
International Filing Date
01.04.2025
Title **
[English]
A METHOD OF TREATING A PLATINUM GROUP METAL CONTAINING LIQUOR TO REMOVE ARSENIC
[French]
PROCÉDÉ DE TRAITEMENT DE LIQUEUR CONTENANT UN MÉTAL DU GROUPE DU PLATINE POUR ÉLIMINER L'ARSENIC
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
DAVIDSON, Neil
N'DEKPLOMAN, Dikivitila
PANDYA, Dipen
REID, Hazel Mary
SPELLER, Stephen
TURNER JONES, Michael David
WITTON, Rebecca Louise
Priority Data
2406249.9
03.05.2024
GB
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 | 2023 | |
| EPO | Filing, Examination, Granting | 8133 | |
| Japan | Filing, Examination, Granting | 2178 | |
| South Korea | Filing, Examination, Granting | 2043 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,117
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Abstract[English]
A method of treating a platinum group metal containing liquor to remove arsenic, the method comprising: adjusting an MCI concentration of the platinum group metal containing liquor such that the platinum group metal containing liquor has an MCI molarity of at least 6 M; adding a reducing agent to the platinum group metal containing liquor to reduce an oxidation- reduction-potential (ORP) value of the platinum group metal containing liquor to less than 625 mV; and after adjusting the MCI concentration and adding the reducing agent, subjecting the platinum group metal containing liquor to a distillation process to remove arsenic.[French]
Est divulgué un procédé de traitement d'une liqueur contenant un métal du groupe du platine pour éliminer l'arsenic, le procédé consistant : à ajuster une concentration de MCI de la liqueur contenant du métal du groupe du platine de sorte que ladite liqueur présente une molarité de MCI d'au moins 6 M ; à ajouter un agent réducteur à la liqueur contenant du métal du groupe du platine pour réduire la valeur de potentiel d'oxydoréduction (ORP) de la liqueur contenant du métal du groupe du platine à moins de 625 mV ; et après ajustement de la concentration de MCI et ajout de l'agent réducteur, à soumettre la liqueur contenant du métal du groupe du platine à un processus de distillation pour éliminer l'arsenic.