Process for working up combustion residues

Details Process for working up combustion residues Process for working up combustion residues

1997-09-15

1999-11-30

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75501, 75961, C21B 1100

Patent

active

059935103

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.

REFERENCES:
patent: 5431710 (1995-07-01), Ebenfelt
patent: 5776226 (1998-07-01), Edlinger

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