Molten metal pump and furnace for use therewith
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United States of America Patent
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Issued Date -
Mar 13, 2003
app pub date -
Sep 7, 2001
filing date -
Sep 7, 2001
priority date (Note) -
Abandoned
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Abstract
A metal melting closed furnace which includes a main chamber, a circulation wall connected to the main chamber by a communications passageway and a vortex well having a exit outlet for molten metal into the main chamber. A cover is emplaced over the vortex well. An inert gas bubble activated molten metal pump is provided in which there is an entry port in the circulation well and exit port tangentially arranged with respect to the periphery of the cavity. This exit port will typically be at or near the top of the vortex well. In order to reduce oxidation, inert gas bubbles are captured from this molten metal pump and are transported to an inert gas atmosphere or blanket above the molten metal vortex.
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