Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1976-11-11
1978-04-04
Ozaki, G.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75117, 75118R, 75118P, 75119, 75120, 75121, C22B 1104, C22B 1512, C22B 1920, C22B 2304
Patent
active
040825469
ABSTRACT:
A method is provided for recovering precious metals such as gold, palladium, rhodium and platinum as well as copper and zinc from respective waste solutions laden with such metals, such as stop baths, stabilizers, solution tailings, and waste plating drag out and rinse solutions. The metal ion-laden solutions are treated with mechanically worked narrow aluminum foil strips, threads or chaff, substantially completely covered with a few microns thick imperfect layer of aluminum oxide. The resulting metal-free solution may be repeatedly used and restored.
The method provides high metal recovery efficiency, and little maintenance, while providing the capability for repetitive use of various solutions employed in plating and other processes.
REFERENCES:
patent: 1963893 (1934-06-01), Drouilly
patent: 2507175 (1950-05-01), Pool
patent: 2905323 (1959-09-01), Megesi
patent: 3674466 (1972-07-01), Anderson et al.
patent: 3709681 (1973-01-01), Wilson
patent: 4008077 (1977-02-01), Wallace
LandOfFree
Recovery of waste heavy metals from solutions by cementation wit 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 waste heavy metals from solutions by cementation wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of waste heavy metals from solutions by cementation wit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-721840