Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Platinum group metal
Patent
1992-11-24
1994-09-06
Lilling, Herbert J.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Platinum group metal
423 23, 423 27, 423 29, 423 30, 75729, 75732, 75735, 75737, 75741, 75744, C22B 1104, C22B 1100
Patent
active
053446259
ABSTRACT:
A process for recovering at least one precious metal from an ore containing metal sulfide material is disclosed. The process involves the use of promoting amounts of certain plant derived ortho-quinone containing components, in particular, certain lignin and/or tannin derived components containing ortho-quinone functionality. Preferred compositions comprise at least one ligno sulfonate component containing ortho-quinone functionality. In the process, the use of at least one additional oxidant capable of maintaining the ortho-quinone containing functionality in the desired oxidation state provides for integrated process synergy.
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Ensci Inc.
Lilling Herbert J.
Uxa, Jr. Frank J.
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