Process for the recovery of metal from cyanide-containing liquid

Details Process for the recovery of metal from cyanide-containing liquid Process for the recovery of metal from cyanide-containing liquid

1993-03-19

1994-06-28

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

210904, 210912, 423 42, C02F 172, C02F 162

Patent

active

053244397

ABSTRACT:
The present invention is a process for oxidation of a liquid which contains cyanide and soluble metal ions, using an oxygen-containing gas. Art example of such a liquid is the liquid waste produced during metal treatment processes. The disclosed process not only eliminates the cyanide completely, but also converts the metal dissolved in the liquid into granular metal oxides which can be readily recovered.

REFERENCES:
patent: 4812243 (1989-03-01), Brandenburg et al.
patent: 4853136 (1989-08-01), Roussel et al.
patent: 4877519 (1989-10-01), Robey
patent: 5106508 (1992-04-01), Schwitzgebel
patent: 5120453 (1992-06-01), Frame et al.

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