Process for recycling an unsorted mixture of spent button cells

Details Process for recycling an unsorted mixture of spent button cells Process for recycling an unsorted mixture of spent button cells

1990-07-31

1992-06-09

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204109, 204112, 204114, 204115, C25C 100

Patent

active

051204096

ABSTRACT:
Process for recycling an unsorted mixture of spent button cells and recovering their metallic components, comprising an anodic dissolution of the button cells, wherein metals constituting these cells are dissolved and redeposited at one or more cathodes, wherein metallic oxides are deposited in the anodic chamber and waste products (plastic, paper, etc.) accumulate in an anodic basket. Oxides are reduced to metals by thermal decomposition, mercury is recovered by distillation and the other metals are recovered by electrolytic separation.

REFERENCES:
patent: 3985630 (1976-10-01), Ginatta
patent: 4039403 (1977-08-01), Astley et al.
patent: 4098658 (1978-07-01), Ginatta
patent: 4229271 (1980-10-01), Prengaman et al.
patent: 4769116 (1988-09-01), Olper et al.
patent: 4927510 (1990-05-01), Olper et al.
patent: 4992149 (1991-02-01), Nguyen

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