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公开(公告)号：EP3294931A1
公开(公告)日：2018-03-21
申请号：EP16793601
申请日：2016-05-13
申请人： AQUA METALS INC
摘要： 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：EP3294929A1
公开(公告)日：2018-03-21
申请号：EP16793600
申请日：2016-05-13
申请人： AQUA METALS INC
摘要： 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：EP3294916A1
公开(公告)日：2018-03-21
申请号：EP16793599
申请日：2016-05-13
申请人： AQUA METALS INC
CPC分类号： C22B13/045 , C25B1/22 , C25B15/08 , C25C1/18 , H01M10/06 , H01M10/54 , Y02P10/212 , Y02W30/84
摘要： 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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