Process for recovery of silver from spent, waste, acidic process

Details Process for recovery of silver from spent, waste, acidic process Process for recovery of silver from spent, waste, acidic process

1986-10-31

1988-04-26

Stoll, Robert L.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75118P, 210719, 210723, 266170, C22B 1104

Patent

active

047402440

ABSTRACT:
Process for recovery of silver from spent, waste acidic silver halide photographic processing fluid, e.g., fixer solution, comprising passing the fluid through finely divided iron, e.g., steel wool, contained in a vessel in the presence of a metal salt of copper or cadmium, e.g., copper(II)sulfate, copper chloride dihydrate, cadmium sulfate, etc. The ratio of iron to metal salt is 25 to 1 to 4 to 1. An apparatus for recovery of silver is also described.

REFERENCES:
patent: 2216765 (1940-09-01), Holzwarth
patent: 3369801 (1968-02-01), Hartman
patent: 3705716 (1972-12-01), Hendrickson
patent: 3792845 (1974-02-01), Larson et al.
patent: 4213600 (1980-07-01), Thompson, Jr.
patent: 4303441 (1981-12-01), Lamisse
patent: 4441697 (1984-04-01), Peterson et al.

Affiliated with

Also associated with

Rating

Process for recovery of silver from spent, waste, acidic process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for recovery of silver from spent, waste, acidic process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recovery of silver from spent, waste, acidic process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-817868