Recovery of metal from dross and apparatus therefore
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United States of America Patent
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Dec 12, 2000
Grant Date -
N/A
app pub date -
Sep 29, 1998
filing date -
Apr 15, 1996
priority date (Note) -
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Abstract
A process and an apparatus are disclosed for improved recovery of metal from dross, wherein a dross treating furnace is provided with a refractory wall or lining with good capacity to store and conduct heat. This furnace is preheated to a desired temperature by injection of oxygen to burn non-recoverable metal remaining in the residue after tapping of the recoverable metal contained in the dross. When dross is treated in such preheated furnace, the heat emanating by conduction from the furnace wall is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs.
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