Value metal recovery

C - Chemistry – Metallurgy – 22 – B

Patent

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Details

C22B 3/46 (2006.01) C22B 3/02 (2006.01) G03C 5/395 (2006.01)

Patent

CA 2220474

Value metal, for example, silver in a spent silver bearing photographic solution is efficiently recovered in an exchange mass comprising a particulate inert substrate, for example, cellulosic fibers or sponge particles, co-mingled and interlocking with elongate particles of replacement metal, for example, strands of steel wool; the substrate defines a non-channeling random flow paths for liquid flow, and inhibits carriage of recovered value metal by the flowing liquid.

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