Process for recovering tungsten carbide from cemented tungsten c

Chemistry: electrical and wave energy – Processes and products

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204 86, 204105R, 2041415, C25F 100

Patent

active

053840160

ABSTRACT:
A process of recovering tungsten carbide from cemented tungsten carbide scraps by selective electrolysis is disclosed. A chelating agent is added to the electrolyte for complexing with tungsten ion to prevent passivation of tungsten carbide, and thus the dissolution rate of the cementing agent is increased.

REFERENCES:
patent: 3595484 (1971-07-01), Bernard et al.
patent: 4170513 (1979-10-01), Piche
patent: 4234333 (1980-11-01), Ghandehari et al.
patent: 4256708 (1981-03-01), Quatrini
patent: 5021133 (1991-06-01), Vanderpool et al.

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