Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1976-03-29
1978-10-31
Prescott, Arthur C.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204149, 204152, 204299R, C02C 512, B03C 500
Patent
active
041233450
ABSTRACT:
A filter method and apparatus removes tramp oils and fine particulate contaminants from an electrically conductive liquid coolant which is utilized in metal forming, or other comparable, operations. The disclosed method includes flowing the liquid coolant into a separation vessel having a plurality of alternating, oppositely charged plates. The tramp oils and particulate contaminants have an electrical surface charge and are therefore attracted toward one of the charged plates to effect a contaminant migration. This migration results in an agglomeration of the contaminants, but does not necessarily result in an accumulation of the contaminants on the attracting plate. The other charged plate is simultaneously generating a myriad of gaseous bubbles by electrolysis of the liquid coolant. The generated bubbles entrain at least a portion of the agglomerated contaminants into an upward flow to the liquid surface where those contaminants can be conventionally removed. Any contaminants which may accumulate on the attracting plate surface can be removed by simply reversing that plate's polarity. The agglomerated contaminants which are not removed by entrainment in the electrolytically produced bubbles can be removed by conventional filtration techniques due to the magnitude of the agglomerate size as compared to the original contaminant size.
REFERENCES:
patent: 3479281 (1969-11-01), Kikindai et al.
patent: 3767046 (1973-10-01), Hartkorn
patent: 3915817 (1975-10-01), Bennett
patent: 3944478 (1976-03-01), Kuji et al.
Amsted Industries Incorporated
Brosius Edward J.
Kostka Fred P.
Prescott Arthur C.
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