Process for working up combustion residues
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United States of America Patent
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-
Nov 30, 1999
Grant Date -
N/A
app pub date -
Sep 15, 1997
filing date -
Sep 17, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for working up combustion residues or slags from waste incineration plants or steel works slags in a converter by reacting the molten slag with a metal bath while injecting carbon and oxygen into the metal bath. The converter is subdivided into three adjacent openly communicating zones. An afterburning zone including at least one lance for afterburning directed onto the slag bath is arranged in the vicinity of the slag feed. The lance generates a circulating flow above the slag bath. Following the afterburning zone, a metal bath sump zone is formed for reacting the metal bath with the slag bath. Next, a settling zone is formed, from which the hot combustion gases and the slag melt are drawn off.
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