Method of treating dust exhausted from melting furnace
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United States of America Patent
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Jul 4, 2000
Grant Date -
N/A
app pub date -
Jul 16, 1997
filing date -
Jul 17, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of treating dust exhausted from a melting furnace in melting an iron-contained material, comprising the steps of: melting the iron-contained material, with air inside the melting furnace shut out from outside air and collecting the dust from the melting furnace into which a gas exhausted from the melting furnace and containing the dust is introduced; performing a lead-collecting process of collecting water, chloride, fluorine, and lead by heating the exhausted dust in vacuum; and performing a zinc-collecting process of collecting metallic zinc contained in the dust by heating a residue of the exhausted dust in vacuum.
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