Process for cleaning metal working fluids for re-use

Details Process for cleaning metal working fluids for re-use Process for cleaning metal working fluids for re-use

1984-01-20

1985-01-08

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210705, 210712, 252 495, B03D 102

Patent

active

044926367

ABSTRACT:
Disclosed is a process for removing foreign matter and tramp oil from a continuously recirculating metal working fluid. The process includes the use of saturated dissolved air flotation which, contrary to prior belief, is able to effectively remove the foreign matter and tramp oil in a quiescent manner with little or no foaming and without removing or harming any emulsions present in the metal working fluid. The process further includes the use of water soluble organic cationic and anionic polyelectrolytes where desired to flocculate the foreign matter and tramp oil to enhance their removal from the metal working fluid and a process by which the formation of foam at or near the surface of the metal working fluid being clarified is able to be suppressed.

REFERENCES:
patent: 2578040 (1951-12-01), Booth et al.
patent: 3446488 (1969-05-01), Mail et al.
patent: 3707464 (1972-12-01), Burns et al.
patent: 3948784 (1976-04-01), Krillic et al.
Bulletin No. KSB 123-8106 by Komline-Sanderson Company.

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