Method for the recovery of metals from electronic waste

    公开(公告)号:US20230250509A1

    公开(公告)日:2023-08-10

    申请号:US18015606

    申请日:2021-07-02

    Applicant: SMS group GmbH

    Abstract: A method for obtaining metals of the 8th to 14th groups, in particular raw copper, comprises the following steps: i) providing and melting down a mixed feed comprising electronic waste in a smelting reactor, so that a first melt with a first metallic phase and a first slag phase is formed; ii) separating out the first slag phase from the smelting reactor; iii) refining the remaining first metallic phase by means of an oxygen-containing gas, possibly with the addition of copper-containing residual materials, so that a second, copper-enriched slag phase is formed; iv) possibly separating off the second slag phase and repeating the step; v) separating off the refined first metallic phase from the smelting reactor; and vi) adding a further mixed feed comprising electronic waste to the remaining second, copper-enriched slag phase and repeating process steps i) to vi).

    Method for obtaining non-ferrous metals, in particular black and/or raw copper, from scrap containing organic matter

    公开(公告)号:US20230272507A1

    公开(公告)日:2023-08-31

    申请号:US18015798

    申请日:2021-06-17

    Applicant: SMS group GmbH

    CPC classification number: C22B15/0056 C22B15/0052 C22B7/003

    Abstract: A method for obtaining non-ferrous metals, in particular black and/or raw copper, from scrap containing organic matter, comprises the following steps: i) providing a melting reactor, wherein the melting reactor includes a melting region, a combustion region and a pyrolysis region; ii) supplying the melting reactor with a mixture comprising the scrap such that it first passes through the pyrolysis region and the combustion region before it reaches the melting region, and is at least partially pre-pyrolyzed and/or combusted, such that an energy-containing gas stream is formed; iii) transferring the energy-containing gas stream into a thermal post-combustion chamber, in which the energy-containing gas stream is completely combusted and thermal energy released during combustion is carried off via an energy recovery unit; and iv) melting the scrap containing organic matter at least part of which has been pre-pyrolized and/or combusted.

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