Chemistry: electrical and wave energy – Processes and products
Patent
1993-11-10
1995-01-24
Gorgos, Kathryn
Chemistry: electrical and wave energy
Processes and products
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.
Lee Sheng-Long
Lin Jainn-Yuan
Lin Jing-Chie
Gorgos Kathryn
National Science Council
Phasge Arun S,.
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