Recovery of flux residues from rinse water in dip brazing

Details Recovery of flux residues from rinse water in dip brazing Recovery of flux residues from rinse water in dip brazing

1979-05-17

1981-01-13

Ramsey, Kenneth J.

Metal fusion bonding

Process

With protecting of work or filler or applying flux

203 47, 210652, 134 13, 75 93AC, B23K 108

Patent

active

042445051

ABSTRACT:
A process for recovery of salts from a rinse liquid solution used to rinse salt flux from a metallurgical joining operation is disclosed in which process soluble flux salts are dissolved in the rinse liquid solution while other insoluble salts are dispersed therein. The process comprises collecting the rinse liquid solution; removing undissolved solids from the solution; concentrating the remaining solution by removal of liquid to provide a slurry; subjecting the slurry to a drying operation to remove the balance of the liquid; and recovering the residue. In a preferred embodiment, the residue is analyzed and sufficient metal salts are added to restore the residue to a desired salt flux composition for reuse.

REFERENCES:
patent: 2327065 (1943-08-01), Reimers
patent: 2396604 (1946-03-01), Reimers
patent: 2569097 (1951-09-01), Grange
patent: 2688402 (1954-09-01), Butterworth
patent: 2723449 (1955-11-01), Miller
patent: 3257081 (1966-06-01), Brown et al.
patent: 3843463 (1974-10-01), Brown
patent: 4073644 (1978-02-01), Papafingos et al.
patent: 4188291 (1980-02-01), Anderson
Brazing Alcoa Aluminum, Aluminum Company of America, Pittsburgh, Pennsylvania, 1955, pp. 51-55.

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