Method for the recovery of precious metals from ores

Details Method for the recovery of precious metals from ores Method for the recovery of precious metals from ores

1985-08-15

1987-02-24

Doll, John

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 2, 75101R, 75108, 75109, 75115, 75121, 423 22, 423 27, 423 32, 423 34, 423 36, 423 41, 423 42, C22B 1104

Patent

active

046455353

ABSTRACT:
A process for the recovery of precious metals from ore containing the same is disclosed. The process includes the formation of a lixiviant solution including a thiourea compound, urea and potassium lignin sulfonate. The ore is then exposed to this lixiviant solution to extract the precious metals therefrom, and the dissolved precious metals are then recovered from the solution.

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patent: 4319922 (1982-03-01), Macdonald
patent: 4342591 (1982-08-01), Lesoille
patent: 4369061 (1983-01-01), Kerley, Jr.

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