Process for the recovery of noble metals from ores; which proces

Details Process for the recovery of noble metals from ores; which proces Process for the recovery of noble metals from ores; which proces

1984-02-09

1985-12-31

Doll, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

75101R, 75104, 75118R, 210903, 423 24, 423 27, C22B 1104, C25C 120

Patent

active

045619476

ABSTRACT:
The present invention provides a process for the hydrometallurgical recovery of noble metals from materials containing them by treatment with thiourea in an aqueous, acidic medium in the presence of an oxidation agent, wherein the aqueous medium simultaneously contains an oxidation agent and a reduction agent.

REFERENCES:
patent: 3969244 (1976-07-01), Kobayashi et al.
patent: 4011304 (1977-03-01), Mancini et al.
patent: 4145212 (1979-03-01), Bodson
patent: 4283224 (1981-08-01), Stewart
patent: 4342591 (1982-08-01), Lesoille
Perry's Chemical Engineer's Handbook, McGraw-Hill Book Co., 1973, pp. 3-43.

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