Method of recovering metals from sludges

Details Method of recovering metals from sludges Method of recovering metals from sludges

1975-12-01

1977-12-20

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204106, 204107, 204108, 204112, 204113, C25C 112, C25C 108, C25C 110, C25C 116

Patent

active

040640221

ABSTRACT:
A sludge containing a sparingly soluble metal compound such as nickel carbonate or the like is supplied to an anode compartment or an intermediate compartment of an electrolytic cell provided with an anode compartment and a cathode compartment or with an anode compartment, an intermediate compartment and a cathode compartment each sectioned by a filter membrane or an ion-exchange membrane, and thereafter an electrolytic treatment is conducted by using an insoluble electrode as anode and a usual electrode as cathode to precipitate a metal such as nickel on the cathode. Effective recovery of a metal is attained directly from a sludge by way of electrolysis.

REFERENCES:
patent: 1251511 (1918-01-01), Guess
patent: 1276130 (1918-08-01), Smith
patent: 2653905 (1953-09-01), Aannerud
patent: 3072545 (1963-01-01), Juda et al.
patent: 3787293 (1974-01-01), Kametani
patent: 3953306 (1976-04-01), Lancy

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