Method and apparatus for reclaiming heat treating salt

Details Method and apparatus for reclaiming heat treating salt Method and apparatus for reclaiming heat treating salt

1975-01-14

1976-04-27

Satterfield, Walter R.

Metal treatment

Compositions

Heat treating

148 18, 148 20, 148 28, C21D 148

Patent

active

039532488

ABSTRACT:
Heat treating salt used as a bath in heat treating metal articles is reclaimed from the rinsing tank in a closed cycle by removing a portion of the salt-contaminated rinse water from the rinsing tank to an enclosed portion of the heat treating tank which serves as a water evaporation zone. There the salt-contaminated rinse water is evaporated by direct contact with the hot molten salt bath and the resulting steam, either as such or after condensation, is conducted back to the rinse tank where it serves to replenish the rinse water. The salt content of the contaminated rinse water which is left behind in the water evaporation zone becomes commingled there with the molten salt bath and is thus reclaimed.

REFERENCES:
patent: 2931743 (1960-04-01), Halgren et al.
patent: 3645802 (1972-02-01), Keough

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