Electrolytic disintegration of sintered metal carbides

Details Electrolytic disintegration of sintered metal carbides Electrolytic disintegration of sintered metal carbides

1981-12-18

1983-05-31

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 500

Patent

active

043859720

ABSTRACT:
Tungsten and cobalt metal are recovered from cemented carbides by the electrolytic disintegration of the cemented carbide as the anode in an aqueous electrolyte containing a soluble alkali metal hydroxide. Tungsten carbide is thus converted to carbide particles, which precipitate from the electrolytic solution. The cobalt metal is precipitated in the electrolyte or plated on the cathode. The cobalt metal is then recovered by separation of a cobalt salt, followed by thermal reduction of the salt.

REFERENCES:
patent: 2872394 (1959-02-01), Newman
patent: 3887680 (1975-06-01), MacInnis
patent: 4128463 (1978-12-01), Formanik
patent: 4140597 (1979-02-01), Kobayakawa
patent: 4234333 (1980-11-01), Ghandehari
Indian J. of Tech., vol 4, Oct. 1966, pp. 313-314.

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