Global Patent Index - EP 1035392 A3

EP 1035392 A3 2002-12-11 - Shaft furnace operating method

Title (en)

Shaft furnace operating method

Title (de)

Verfahren zum Betreiben eines Schachtofens

Title (fr)

Méthode por opérer un four à cuve

Publication

EP 1035392 A3 (DE)

Application

EP 00104380 A

Priority

DE 19909742 A

Abstract (en)

[origin: EP1035392A2] Metal-producing shaft furnace operation comprises oxygen and coal dust supply through burners with annular outlets arranged concentrically about a central outlet. A method of operating a metal-producing shaft furnace comprises continuously or periodically filling the shaft with a charge, withdrawing melt the shaft bottom and supplying the shaft, especially in its lower region, with oxygen or oxygen-containing gas and coal dust or coal dust-containing material through one or more burners (especially high velocity burners), having annular outlet opening regions arranged concentrically about a central outlet opening, and/or one or more oxygen lances fitted with the burner. Preferred Features: The coal dust or coal dust-containing material is supplied through the central opening.

IPC 1-7 (main, further and additional classification)

F27B 1/20; C21B 5/00; C21B 11/02; C21C 5/46; F23D 1/00; F23D 14/22; F27B 1/10; F27B 1/16

IPC 8 full level (invention and additional information)

C21B 5/00 (2006.01); C21C 1/08 (2006.01); F27B 1/16 (2006.01); F27D 99/00 (2010.01)

CPC (invention and additional information)

F27D 99/0033 (2013.01); C21B 5/003 (2013.01); C21C 1/08 (2013.01); F27B 1/16 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

DE 19909742 A1 20000907; EP 1035392 A2 20000913; EP 1035392 A3 20021211