Cathode assembly for an electrolytic cell

    公开(公告)号:US11618960B2

    公开(公告)日:2023-04-04

    申请号:US17046624

    申请日:2019-02-14

    摘要: A cathode assembly for an electrolytic cell including a cathode block having a second surface and a first surface. The cathode block also including at least one sealing groove opening onto its first surface and a plurality of electrical contact plugs mounted in electrical contact with the first surface of the cathode block. The cathode assembly includes at least one current supply plate in electrical contact with at least one electrical contact plug, and is connected to at least one unit for connection to an electric current source. The cathode assembly includes at least one current supply bar having a coefficient of thermal expansion substantially identical to the coefficient of thermal expansion of the current supply plate and is sealed within the at least one sealing groove while being fastened to at least one current supply plate.

    Electrode configurations for electrolytic cells and related methods

    公开(公告)号:US11585003B2

    公开(公告)日:2023-02-21

    申请号:US17372248

    申请日:2021-07-09

    发明人: Xinghua Liu

    摘要: An electrolytic cell for producing aluminum metal is disclosed. The electrolytic cell comprises at least one anode module having a plurality of anodes and being supported above a corresponding at least one cathode module having a plurality of cathodes, the at least one anode module being supported by a positioning apparatus configured to move inside the cell for selectively positioning the plurality of anodes within the electrolytic cell relative to adjacent cathodes in order to adjust an anode-cathode distance (ACD) and/or an anode-cathode overlap (ACO). Preferably, the anodes are inert or oxygen-evolving electrodes for an eco-friendly or “green” production of a metal, such as aluminum (or aluminium).

    MATERIAL COMPONENTS PROTECTION AGAINST THE CORROSIVE ACTION CRYOLITE MELTS IN ALUMINIUM REDUCTION CELLS

    公开(公告)号:US20230021762A1

    公开(公告)日:2023-01-26

    申请号:US17961021

    申请日:2022-10-06

    申请人: Ghislain Gonthier

    发明人: Claude Allaire

    IPC分类号: C25C3/08 C25C3/12

    摘要: The present document describes an electrolytic cell comprising a protective layer comprising elemental copper covering at least in part or all of a refractory material assembly covering an interior surface thereof. Also described is a copper oxide containing composition comprising copper oxide and any one of a reducing agent and a binder. Also described is a method of protecting a refractory material assembly covering an interior surface of an electrolytic cell, comprising covering at least in part, or all of the refractory material assembly with a copper sheet, a structure comprising elemental copper, a copper oxide, an elemental copper comprising composite material, a copper oxide containing composition and combinations thereof, to provide a protective layer comprising elemental copper.

    Cathode block having a slot geometry

    公开(公告)号:US11339489B2

    公开(公告)日:2022-05-24

    申请号:US16307586

    申请日:2017-06-14

    申请人: Tokai COBEX GmbH

    IPC分类号: C25C3/08 C01B32/20 C25C3/16

    摘要: Disclosed is a cathode block having a slot geometry, said carbon-based cathode block for an electrolysis cell for the production of aluminium being provided with at least one slot for accommodating at least one cathode bar, said at least one slot having at least one cavity, at least some sections of which extend in the longitudinal direction of the slot and which includes at least one undercut.

    Apparatuses and systems for vertical electrolysis cells

    公开(公告)号:US11203814B2

    公开(公告)日:2021-12-21

    申请号:US15474934

    申请日:2017-03-30

    申请人: Alcoa USA Corp.

    摘要: In one embodiment, the disclosed subject matter relates to an electrolytic cell that has: a cell reservoir; a cathode support retained on a bottom of the cell reservoir, wherein the cathode support contacts at least one of: a metal pad and a molten electrolyte bath within the cell reservoir, wherein the cathode support includes: a body having a support bottom, which is configured to be in communication with the bottom of the electrolysis cell; and a support top, opposite the support bottom, having a cathode attachment area configured to retain a at least one cathode plate therein.