Value metal recovery

Details Value metal recovery Value metal recovery

1997-11-28

1999-05-04

Kastler, Scott

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75733, 266101, 266170, C22B 1106

Patent

active

059000414

ABSTRACT:
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, synthetic 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.

REFERENCES:
patent: 4325732 (1982-04-01), Woog
patent: 4331473 (1982-05-01), King, Jr.
patent: 4662613 (1987-05-01), Woog
patent: 4842644 (1989-06-01), Sneff
patent: 5026029 (1991-06-01), Peterson
patent: 5173247 (1992-12-01), Woog
patent: 5458024 (1995-10-01), Schiller et al.

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