公开(公告)号：US20220275527A1

公开(公告)日：2022-09-01

申请号：US17631844

申请日：2020-07-28

Applicant: Aqua Metals Inc.

Inventor： Samaresh Mohanta ,  Joshua Reill ,  Benjamin Sol Taecker ,  Jeffery Hoke ,  Brian James Dougherty ,  Jiaqi Liao

IPC: C25C1/18 ,  C25C7/02

Abstract: Valuable metals, and especially copper and silver, are recovered from a lead containing electrolyte in a process in which the electrolyte is fed into an electrochemical polishing reactor that has a high-surface area cathode at which the electrode potential is controlled to so preferentially reduce copper and silver and to form a pre-treated lead-enriched electrolyte that can then be subjected electrochemical lead recovery.

公开(公告)号：US10665907B2

公开(公告)日：2020-05-26

申请号：US15810808

申请日：2017-11-13

Applicant: Aqua Metals Inc.

Inventor： Stephen R. Clarke ,  Robert Lewis Clarke ,  Michael David Hurwitz ,  Michael John King ,  Selwyn Mould

IPC: C25C1/00 ,  H01M10/54 ,  C25C1/18 ,  H01M4/14 ,  H01M10/06 ,  C25C5/02 ,  C25C7/00 ,  C25C7/08

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, and spent electroprocessing solvent can be recycled to the recovery process.

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

IPC: C25C1/18 ,  C25C7/00 ,  C25C7/02 ,  C25C7/04 ,  H01M10/54

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

公开(公告)号：US09837689B2

公开(公告)日：2017-12-05

申请号：US15037318

申请日：2014-11-18

Applicant: Aqua Metals Inc.

Inventor： Stephen R. Clarke ,  Robert Lewis Clarke ,  Michael David Hurwitz ,  Michael John King ,  Selwyn Mould

IPC: C25C1/18 ,  H01M10/54 ,  H01M4/14 ,  H01M10/06 ,  C25C7/00

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 and spent electroprocessing solvent can be recycled to the recovery process.