WO2024003761 - GRAPHITE MATERIAL PURIFICATION PROCESS
National phase entry is expected:
Publication Number
WO/2024/003761
Publication Date
04.01.2024
International Application No.
PCT/IB2023/056656
International Filing Date
28.06.2023
Title **
[English]
GRAPHITE MATERIAL PURIFICATION PROCESS
[French]
PROCÉDÉ DE PURIFICATION DU GRAPHITE
Applicants **
TALGA TECHNOLOGIES LIMITED
Inventors
TURNER, Duncan
Priority Data
2022901820
29.06.2022
AU
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Pages of Specification | * |
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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 II
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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 | 3379 | |
| EPO | Filing, Examination, Granting | 33110 | |
| Japan | Filing, Examination, Granting | 3386 | |
| South Korea | Filing, Examination, Granting | 4585 | |
| USA | Filing, Examination, Granting | 11740 |
Total:
56,200
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
A graphite material purification process (10) comprising a pelletisation step (14), a caustic baking step (16) providing a sintered product, a water leach step (18) whereby impurity minerals are solubilised, forwarded for effluent treatment, and separated, a first sulphuric acid leach step (20) wherein remaining impurity minerals are solubilised, forwarded for effluent treatment, and separated from leach solids, a hydrofluoric acid leach step (22) wherein partially leached impurity minerals are solubilised, forwarded for effluent treatment, and separated from leach solids, a second sulphuric acid leach step (24) wherein impurity minerals not leached in previous steps and components precipitated in the hydrofluoric acid leach step (22) are solubilised, forwarded for effluent treatment, and separated from leach solids, and washing stages wherein remaining soluble impurities are separated, and providing a purified graphite material (32).[French]
L'invention concerne un procédé de purification du graphite (10) comprenant une étape de pelletisation (14), une étape de cuisson caustique (16) donnant un produit fritté, une étape de lixiviation à l'eau (18) au moyen de laquelle des minéraux d'impureté sont solubilisés, transférés pour un traitement d'effluent, et séparés, une étape de lixiviation à l'acide sulfurique (20) dans laquelle les minéraux d'impureté restants sont solubilisés, transférés pour le traitement d'effluent, et séparés des solides de lixiviation, une étape de lixiviation à l'acide sulfurique (24) dans laquelle des minéraux d'impureté non lixiviés au cours des étapes précédentes et des composants précipités à l'étape de lixiviation à l'acide fluorhydrique (22) sont solubilisés, transférés pour le traitement d'effluent, et séparés des solides de lixiviation, et des étapes de lavage dans lesquelles les impuretés solubles restantes sont séparées, résultant en un graphite purifié (32).