Invention Grant
- Patent Title: Process for recovering lead from a lead pastel and use thereof in a process for recovering lead-acid accumulator components
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Application No.: US16976897Application Date: 2019-03-06
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Publication No.: US11667990B2Publication Date: 2023-06-06
- Inventor: Massimo Giuseppe Maccagni , Edoardo Guerrini
- Applicant: ENGITEC TECHNOLOGIES S.P.A.
- Applicant Address: IT Novate Milanese
- Assignee: ENGITEC TECHNOLOGIES S.P.A.
- Current Assignee: ENGITEC TECHNOLOGIES S.P.A.
- Current Assignee Address: IT Novate Milanese
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: IT 2018000003369 2018.03.08
- International Application: PCT/IB2019/051789 2019.03.06
- International Announcement: WO2019/171282A 2019.09.12
- Date entered country: 2020-08-31
- Main IPC: C25C7/02
- IPC: C25C7/02 ; C25C1/00 ; C22B3/00 ; C25C1/18 ; C25C7/08 ; H01M10/54
Abstract:
The present invention concerns a process for the recovery of lead from a lead pastel electrolytically, where the pastel contains lead sulfate. The process provides for the leaching of the non-desulfurised pastel and the subsequent removal of the sulfates by precipitation; the leachate containing the lead ions is then subjected to electrolysis for the recovery of metal lead. The present invention further relates to a process for the recovery of lead accumulator components, wherein the lead contained in the pastel of the accumulators is recovered according to the aforesaid process.
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