Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-04-21
1978-02-07
Thomas, Earl C.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
423 37, C01B 100
Patent
active
040725871
ABSTRACT:
Silver and gold are selectively recovered from cyanide solutions by addition of lime, and precipitation of the silver as sulfide by means of sodium sulfide, followed by electrowinning of gold from the filtrate.
REFERENCES:
patent: 515148 (1894-02-01), Janin et al.
patent: 671704 (1901-04-01), Kendall
patent: 3920403 (1975-11-01), Ross
Heinen Harold J.
Lindstrom Roald E.
Peterson David G.
Brown William S.
Gardiner Donald A.
Hearn Brian E.
The United States of America as represented by the Secretary of
Thomas Earl C.
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