Method for controlling foam production in reduced pressure fining

A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbles of the foam and then collapsing...

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Bibliographische Detailangaben
Hauptverfasser: MURNANE RAND A, WOOLLEY FRANK, HAYES JAMES C, PALMQUIST RONALD W
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbles of the foam and then collapsing the bubbles of the drained foam.