Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1994-06-07
1995-10-17
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75733, 266170, C22B 302, C22B 346
Patent
active
054580242
ABSTRACT:
An improved apparatus and method for recovering metallic silver from solutions containing silver ions by reducing silver ions and oxidizing an element in the electromotive series above silver, such as iron. The apparatus provides plug flow of solution into the reaction media and thereby eliminates the principal cause of channelling and premature failure of the media. A distribution chamber distributes solution uniformly to a porous pad of tangled threads or fibers ahead of the media. This ensures a planar flow front of solution as it enters and passes through the media. In a preferred embodiment, the pad is resilient and is supported by a highly open grating. By eliminating the flow and pressure imbalances or gradients at the entry to the media which are inherent in previous apparatus designs, the invention prevents or greatly retards the onset of channelling or plugging of the media.
REFERENCES:
patent: 2194056 (1940-03-01), Quaglia
patent: 3369801 (1968-02-01), Hartman
patent: 3655175 (1972-04-01), Zeleny et al.
patent: 3705716 (1972-12-01), Hendrickson
patent: 3792845 (1974-02-01), Larson et al.
patent: 4325732 (1982-04-01), Woog
patent: 4662613 (1987-05-01), Woog
patent: 5004212 (1991-04-01), Gutierrez
George Mark J.
Schiller Edward E.
Andrews Melvyn
Trebla Chemical Company
LandOfFree
Apparatus and method for recovery of silver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for recovery of silver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for recovery of silver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-589473