Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1991-03-06
1991-07-02
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C22B 1104
Patent
active
050282590
ABSTRACT:
An improved process for recovery for precious metals such as gold and silver from aqueous cyanide solutions by contact with certain guanidine reagents. The guanidine reagents not only extract the precious metal but may provide advantages in selectivity of gold over other metals, such as tetra- and pentahydrocarbon substituted non-resin guanidine reagents and tri- and tetra-hydrocarbon substituted resin guanidine reagents.
REFERENCES:
patent: 4814007 (1989-03-01), Lin et al.
Minerals and Metallurgical Processing: 8/84, pp. 153-157 "Selectivity . . . Solutions" J. Chem. Soc.: 1951, pp. 2492-2494 The Basic Strength of Methylated Guanidines.
Lin Lon-Tang W.
Mattison Phillip L.
Virnig Michael J.
Henkel Research Corporation
Jaeschke Wayne C.
Rosenberg Peter D.
Span Patrick J.
Szoke Ernest G.
LandOfFree
Recovery of precious metal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of precious metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of precious metal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1244069