Process for separating tungsten from coinage metals

Details Process for separating tungsten from coinage metals Process for separating tungsten from coinage metals

1981-06-01

1983-02-22

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204106, 204112, C25C 108, C25C 120

Patent

active

043747132

ABSTRACT:
A process for cleanly separating tungsten and the coinage metals from alloys or mixtures thereof comprises electrowinning the coinage metal from an electrolyte solution which is maintained substantially free of tungsten contamination by contacting the electrolyte solution with an organic extractant to remove the tungsten. A preferred extractant solution comprises a quaternary alkyl ammonium salt or quaternary alkyl phosphonium salt dissolved in an inert organic solvent.

REFERENCES:
patent: 3733256 (1973-05-01), Anderson

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