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topic 771a

Reclaiming silver powder from crushed glass


I am looking for a process to reclaim silver powders (sub 20 micron) from a crushed glass feedstock.

Any Ideas?

Chuck Musgrave

Silver, I believe will attract ionically to iron. There are methods to retrieve photographic silvers from solutions so I might assume that since the crushed glass could be introduced to a liquid medium (H2O for ex.) and run through a reclaiming cartridge, trapping the silver. However you would have to refine the silver from the iron cartridge

Alex Ross
- Portland, Oregon


Try nitric acid to dissolve the silver into silver nitrate. From there, precipitate out the silver. I do not remember how to do this, but I know the precipitation process is performed in industry.

Joel Stray
- Hudsonville, Michigan

Coatings on Glass

December 22, 2008

I kind of like Joel's idea of dissolving the silver into nitric acid. It can then be removed as rather pure silver by the addition of a reducing agent like formaldelhyde. Look into the "Brashear process" for more info, starting with letters 916 and 9550. Good luck.


Ted Mooney, Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey

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