Precious metal recovery process from sulfide ores

Details Precious metal recovery process from sulfide ores Precious metal recovery process from sulfide ores

1992-08-26

1994-01-18

Lewis, Michael

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Platinum group metal

423 27, 423 29, 423 30, 423 31, 423 41, 75744, C01G 5500, C01G 500, C01G 700, C22B 1100

Patent

active

052798020

ABSTRACT:
A process for recovering at least one precious metal from an ore containing carbonaceous material is disclosed. The process involves the use of promoting amounts of certain metal redox couples and/or metal components, in particular, certain metal complexes with ligands.
Preferred metal compositions comprise at least one of (1) redox cyclable vanadium (5+) ligand complex, (2) redox cyclable iron (3+) ligand complex, and (3) redox cyclable manganese (3+) ligand complex. In the process, the use of at least one regenerable component capable of maintaining the complexed metal in the desired oxidation state provides for integrated process synergy.

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