Method of melting oxidic slags and combustion residues
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United States of America Patent
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Jun 12, 2001
Grant Date -
N/A
app pub date -
Mar 24, 1998
filing date -
Jul 24, 1996
priority date (Note) -
Expired
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Abstract
The process for melting oxidic slags and combustion residues having a minimum content of metallized portions such as, e.g., iron and/or carbon carriers, of 3% by weight is carried out in a shaft furnace directly heated by means of fossil fuels via burners. The molten slag bath is transferred into a hearth type furnace immediately adjoining the shaft furnace and in which metals such as, for instance, copper are separated by sedimentation under thermal dissociation and discharged separately via a bottom outlet. The completely oxidized slag reaches a consecutively arranged slag treating reactor via a separate discharge.
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