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公开(公告)号：US20180355494A1
公开(公告)日：2018-12-13
申请号：US15573393
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Stephen R. Clarke , Robert Lewis Clarke , Brian Dougherty
Abstract: A closed loop electrochemical process of recovery of high-purity lead uses continuous formation of adherent lead on a cathode from an electrolyte that is used to dissolve desulfated lead paste. Preferred cathodes include aluminum containing cathodes that are operated in methane sulfonic acid to produce a micro- or nanoporous mixed matrix metallic composition and lead dioxide formation at the anode is avoided using appropriate anode configurations or operating conditions
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公开(公告)号：US11239507B2
公开(公告)日：2022-02-01
申请号：US16407914
申请日：2019-05-09
Applicant: Aqua Metals Inc.
Inventor： Brian Dougherty , Michael John King , Robert Lewis Clarke , Stephen R. Clarke , Michael David Hurwitz
Abstract: Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining. Spent electroprocessing solvent and/or base utilized to treat lead paste from the lead acid battery scrap can be recycled to the recovery process.
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公开(公告)号：US20180127888A1
公开(公告)日：2018-05-10
申请号：US15573410
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Stephen R. Clarke , Michael John King , Brian Dougherty , Michael David Hurwitz
IPC: C25C1/18 , C25C5/02 , H01M4/16 , H01M4/68 , H01M4/73 , H01M4/84 , H01M10/06 , B82Y40/00 , B21J1/06 , B21K23/00
CPC classification number: C25C1/18 , B21J1/06 , B21K23/00 , B82Y40/00 , C25C5/02 , H01M4/14 , H01M4/16 , H01M4/68 , H01M4/73 , H01M4/84 , H01M10/06 , Y02W30/84
Abstract: The inventive subject matter is directed to continuous electrochemical production of highly pure micro- or nanostructured lead that at least partially encloses the electroprocessing solvent and molecular hydrogen and optional guest compounds to form a mixed matrix. Such compositions are particularly suitable for cold forming of various structures and/or for alloy and composite material production.
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公开(公告)号：US20180127852A1
公开(公告)日：2018-05-10
申请号：US15573356
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Robert Lewis Clarke , Brian Dougherty , Richard Clarke , Samaresh Mohanta
CPC classification number: C22B13/045 , C25B1/22 , C25B15/08 , C25C1/18 , H01M10/06 , H01M10/54 , Y02P10/212 , Y02W30/84
Abstract: Lead is recovered from lead paste of a lead acid battery in a continuous process. The lead paste is contacted with a base to generate a supernatant and a precipitate. The precipitate is separated from the supernatant, and is contacted with an alkane sulfonic acid to generate a mixture of lead ion solution and insoluble lead dioxide. The lead dioxide is reduced with a reducing agent to form lead oxide, and the lead oxide is combined with the lead ion solution to form a combined lead ion solution to so allow a continuous process without lead dioxide accumulation. Lead is recovered from the combined lead ion solution using electrolysis.
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公开(公告)号：US10793957B2
公开(公告)日：2020-10-06
申请号：US15573393
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Stephen R. Clarke , Robert Lewis Clarke , Brian Dougherty
Abstract: A closed loop electrochemical process of recovery of high-purity lead uses continuous formation of adherent lead on a cathode from an electrolyte that is used to dissolve desulfated lead paste. Preferred cathodes include aluminum containing cathodes that are operated in methane sulfonic acid to produce a micro- or nanoporous mixed matrix metallic composition and lead dioxide formation at the anode is avoided using appropriate anode configurations or operating conditions
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Patent Agency Ranking
公开(公告)号：US20190267681A1
公开(公告)日：2019-08-29
申请号：US16407914
申请日：2019-05-09
Applicant: Aqua Metals Inc.
Inventor： Brian Dougherty , Michael John King , Robert Lewis Clarke , Stephen R. Clarke , Michael David Hurwitz
Abstract: Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining. Spent electroprocessing solvent and/or base utilized to treat lead paste from the lead acid battery scrap can be recycled to the recovery process.
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公开(公告)号：US10340561B2
公开(公告)日：2019-07-02
申请号：US15527749
申请日：2015-05-13
Applicant: Aqua Metals Inc.
Inventor： Brian Dougherty , Michael John King , Robert Lewis Clarke , Stephen R. Clarke , Michael David Hurwitz
Abstract: Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining. Spent electroprocessing solvent and/or base utilized to treat lead paste from the lead acid battery scrap can be recycled to the recovery process.
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公开(公告)号：US11028460B2
公开(公告)日：2021-06-08
申请号：US15573356
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Robert Lewis Clarke , Brian Dougherty , Richard Clarke , Samaresh Mohanta
Abstract: Lead is recovered from lead paste of a lead acid battery in a continuous process. The lead paste is contacted with a base to generate a supernatant and a precipitate. The precipitate is separated from the supernatant, and is contacted with an alkane sulfonic acid to generate a mixture of lead ion solution and insoluble lead dioxide. The lead dioxide is reduced with a reducing agent to form lead oxide, and the lead oxide is combined with the lead ion solution to form a combined lead ion solution to so allow a continuous process without lead dioxide accumulation. Lead is recovered from the combined lead ion solution using electrolysis.
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公开(公告)号：US10689769B2
公开(公告)日：2020-06-23
申请号：US15573410
申请日：2016-05-13
Applicant: Aqua Metals Inc.
Inventor： Stephen R. Clarke , Michael John King , Brian Dougherty , Michael David Hurwitz
IPC: H01M4/16 , H01M4/68 , C25C1/18 , H01M10/06 , C25C5/02 , H01M4/14 , B21J1/06 , B82Y40/00 , H01M4/73 , H01M4/84 , B21K23/00
Abstract: The inventive subject matter is directed to continuous electrochemical production of highly pure micro- or nanostructured lead that at least partially encloses the electroprocessing solvent and molecular hydrogen and optional guest compounds to form a mixed matrix. Such compositions are particularly suitable for cold forming of various structures and/or for alloy and composite material production.
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公开(公告)号：US20170352927A1
公开(公告)日：2017-12-07
申请号：US15527749
申请日：2015-05-13
Applicant: Aqua Metals Inc.
Inventor： Brian Dougherty , Michael John King , Robert Lewis Clarke , Stephen R. Clarke , Michael David Hurwitz
CPC classification number: H01M10/54 , C25C1/18 , C25C5/02 , C25C7/00 , C25C7/005 , C25C7/007 , C25C7/08 , H01M4/14 , H01M10/06 , Y02P10/212 , Y02W30/84
Abstract: Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining. Spent electroprocessing solvent and/or base utilized to treat lead paste from the lead acid battery scrap can be recycled to the recovery process.
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