Apparatus and method for recovering non-ferrous metals from hot dross
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United States of America Patent
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Feb 4, 1997
Grant Date -
N/A
app pub date -
Mar 29, 1995
filing date -
Mar 29, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for recovering free aluminum from a metal bearing dross containing free aluminum metal and oxides of the metal. Hot dross is collected from a hot dross source into a vessel, and the vessel is placed into a sealable storage container. The storage container is insulated to maintain heat generated by the hot dross within the interior of the storage container to maintain the dross at or near its temperature when first placed in the storage container. An inert gas is then introduced into the container to purge the container of all gasses other than the inert gas. The inert gas reduces thermiting of the hot dross and limits the cooling of the hot dross in order to maintain the hot dross at an elevated temperature while the hot dross remains in the storage container. The dross is then removed from the vessel and introduced dross into a dross processing device such as a furnace.
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