Systems and methods for continuous alkaline lead acid battery recycling

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United States of America Patent

PATENT NO 11072864
APP PUB NO 20190301031A1
SERIAL NO

16435245

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Abstract

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Lead is recycled from lead paste of lead acid batteries in a process that employs alkaline desulfurization followed by formation of plumbite that is then electrolytically converted to pure lead. Remaining insoluble lead dioxide is removed from the lead plumbite solution and reduced to produce lead oxide that can be fed back to the recovery system. Sulfate is recovered as sodium sulfate, while the so produced lead oxide can be added to lead paste for recovery.

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Patent Owner(s)

  • AQUA METALS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clarke, Robert Lewis Orinda, US 28 494
Mohanta, Samaresh San Diego, US 54 931

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