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OwnerEvgenij Valer'evich ZHELEZNOV, Poman Ivanovich KRAJDENKO +3inventors
InventorsEvgenij Valer'evich ZHELEZNOV, Poman Ivanovich KRAJDENKO, Viktor Khrist'yanovich MANN, Dmitrij Konstantinovich RYABOV, Aleksandr Yur'evich TELESHEV
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The invention relates to non-ferrous metal industry and can be used for refining aluminium alloys from metallic impurities. The device comprises no less than one porous removable diaphragm, permeable to bath and impermeable to molten aluminium, filled with bath, wherein cathode is vertically mounted and immersed in molten aluminium with metallic impurities, placed in a vessel with an anode current lead. The method involves placing a melt of contaminated aluminium and a bath of salts of alkali or alkaline-earth metals and aluminium salt into an electrolytic refining device and performing electrolytic refining at a cathodic current density from 0.5 to 21 A/cm2 a temperature ranging from 780° C. to 920° C. Technical effect: increased capacity, with the ability to adjust the bath composition.
A device for electrolytic refining of aluminium and/or its alloys from metal impurities, having a cover vessel (12) lined with refractory materials to hold molten anode aluminium (8) with an anode lead (9), bath (7), and molten cathode aluminium (5), a cathode with a current lead (4), and a collecting tank (11) for cathode aluminium (5), no less than one porous diaphragm (6), characterised in that the porous diaphragm (6) is a closed removable vessel, mounted by attachment (10) on the cover (12) and filled with bath (7), permeable to bath but impermeable to molten aluminium or aluminium alloy with impurities and molten cathode aluminium (5), wherein the cathode with the current lead (4) is loaded and immersed in molten anode aluminium (9), with the cathode and current lead (4) vertically fixed inside the porous diaphragm vessel (6), and drainage channels (13) in the bottom part of the cathode are located at the level of molten cathode aluminium (5) to enable its removal from the porous diaphragm vessel (6) into the collecting tank (11).
The device for electrolytic refining of aluminium and/or its alloys from metal impurities, having a cover vessel (12) lined with refractory materials for accommodating therein molten anode aluminium (8) with an anode lead (9), bath (7) and molten cathode aluminium (5), a cathode with a current lead (4) and a collecting tank (11) for cathode aluminium (5), no less than one porous diaphragm (6), differing in that the porous diaphragm (6) is designed as a closed removable vessel mounted by means of an attachment (10) on a cover (12) and filled with bath (7), permeable to bath and impermeable to molten aluminium or aluminium alloy with impurities and molten cathode aluminium (5), wherein the cathode with current lead (4) is loaded and immersed in molten anode aluminium (9), wherein the current-supported cathode (4) is vertically fixed inside the porous diaphragm vessel (6), and in the cathode walls (4) or in the attachment (10) and cover (12) there are drainage channels (13) located at the level of the bath melt mirror to enable removal of cathode aluminium (5) from the porous diaphragm vessel (6) into the collecting tank (11).
Dependencies are inferred from the claim text.