EP 4251791 A1 20231004 - REMOVING IMPURITIES FROM AN ELECTROLYTE
Title (en)
REMOVING IMPURITIES FROM AN ELECTROLYTE
Title (de)
ENTFERNUNG VON VERUNREINIGUNGEN AUS EINEM ELEKTROLYT
Title (fr)
ÉLIMINATION D'IMPURETÉS D'UN ÉLECTROLYTE
Publication
Application
Priority
- US 202063117483 P 20201124
- CA 2021051665 W 20211123
Abstract (en)
[origin: WO2022109725A1] It is disclosed a purifier assembly and method for removing impurities from an electrolytic bath before using the same with an electrolytic cell for making a metal, such as aluminum or aluminium. The assembly comprises a purification tank, located upstream the cell, for containing the bath; and at least one row, preferably at least two rows, of alternating vertically oriented cathodes and anodes configured to be operatively connected to a power supply for providing an electric current to the anodes and cathodes. The rows of vertically oriented cathodes and anodes are configured in size to be inserted into the tank. The purifier assembly is configured to maintain an anode-to-cathode distance (ACD) between the cathodes and anodes. The purifier is particularly adapted for removing sulfur, phosphorus, iron, and/or gallium from cryolite for the eco-friendly production of aluminum with a cell using oxygen-evolving or inert anodes, which preferably requires a purer bath.
IPC 8 full level
CPC (source: DK EP US)
C25B 1/01 (2021.01 - DK EP); C25B 9/30 (2021.01 - DK EP); C25B 11/02 (2013.01 - DK EP); C25B 15/04 (2013.01 - DK EP); C25C 3/18 (2013.01 - DK EP US); C25C 3/34 (2013.01 - DK EP); C25C 7/005 (2013.01 - DK EP US); C25C 7/007 (2013.01 - DK EP); C25C 7/025 (2013.01 - DK EP US); C25C 7/06 (2013.01 - DK EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022109725 A1 20220602; AU 2021386476 A1 20230622; AU 2021386476 A9 20241010; CA 3197049 A1 20220602; CN 116583629 A 20230811; DK 202370307 A1 20230706; EP 4251791 A1 20231004; US 2024003030 A1 20240104; ZA 202305470 B 20240131
DOCDB simple family (application)
CA 2021051665 W 20211123; AU 2021386476 A 20211123; CA 3197049 A 20211123; CN 202180079016 A 20211123; DK PA202370307 A 20230619; EP 21895995 A 20211123; US 202118038358 A 20211123; ZA 202305470 A 20230519