Method and apparatus for recycling heat treating salts

Details Method and apparatus for recycling heat treating salts Method and apparatus for recycling heat treating salts

1977-07-25

1979-04-17

Lake, Roy

Metallurgical apparatus

Having means for contacting a solid metalliferous material...

266120, C21D 146

Patent

active

041497023

ABSTRACT:
A system for recycling heat treating salts such as nitrates and nitrites from a rinse bath including means to prevent the excessive build-up of impurities such as carbonates which impair heat treat efficiency. For example, carbonates which form in a nitrate-nitrite quench bath are removed by concentrating the rinse water, rectifying the concentrate and returning molten rectified salt to the quench.

REFERENCES:
patent: 3645802 (1972-02-01), Keough
patent: 3793208 (1974-02-01), Foreman
patent: 3847597 (1974-11-01), Mueller et al.
patent: 3953508 (1976-04-01), Coch
patent: 3966508 (1976-06-01), Mohr
patent: 4066477 (1978-01-01), Bockenhofl et al.

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