Metal treatment – Compositions – Heat treating
Patent
1981-08-21
1983-08-02
O'Keefe, Veronica
Metal treatment
Compositions
Heat treating
148 18, 148 20, 148 27, C21D 148
Patent
active
043964397
ABSTRACT:
A method is provided for the recovery and recycle of nitrate and nitrite salts present in environmentally hazardous chloride containing quench bath solids, comprising the steps of leaching the solids with hot water to provide an aqueous leachate that depletes the hot water soluble content of the solids, clearing the resulting aqueous leachate of solids, and recycling it while hot into a fused quench bath.
REFERENCES:
patent: 3953248 (1976-04-01), Coch
patent: 3966508 (1976-06-01), Mohr
patent: 4158579 (1979-06-01), Foreman et al.
O'Keefe Veronica
Park Chemical Company
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