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US 2020/0331769 A1Published application
High purity aluminum oxide via electrodialysis
AssigneeNextchem S.P.A.
InventorJoseph J. Stevens, III
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Abstract
The invention describes methods for the production of a high purity aluminum salt solution via electrodialysis, and ultimately, the conversion of the high purity aluminum salt to high purity aluminum oxide.
Claims20
A method for the production of a high purity aqueous aluminum salt solution comprising the steps:
- providing an aluminum salt in an initial aluminum salt solution;
- subjecting the initial aqueous aluminum salt solution to electrodialysis to remove monovalent and multivalent cations from the initial aqueous aluminum salt solution, wherein a purified aqueous aluminum salt solution is produced with a reduction of unwanted monovalent and/or multivalent cations from the initial aqueous aluminum salt solution.
A method for the removal of monovalent and multivalent metal cations from an aqueous aluminum salt solution comprising the steps:
- providing an aluminum salt in an initial aluminum salt solution;
- subjecting the initial aqueous aluminum salt solution to electrodialysis to remove monovalent and multivalent cations from the initial aqueous aluminum salt solution, wherein a purified aqueous aluminum salt solution is produced with a reduction of unwanted monovalent and/or multivalent cations from the initial aqueous aluminum salt solution.
Dependencies are inferred from the claim text.