Global Patent Index - EP 1080236 A1

EP 1080236 A1 2001-03-07 - VARIABLY INSERTABLE COMBINED LANCE WITH DISPLACEABLE BURNER AND BLOWER LANCE BODIES

Title (en)

VARIABLY INSERTABLE COMBINED LANCE WITH DISPLACEABLE BURNER AND BLOWER LANCE BODIES

Title (de)

VARIABEL EINSETZBARE KOMBILANZE MIT VERSCHIEBBAREN BRENNER- UND BLASLANZENKÖRPERN

Title (fr)

LANCE COMBINEE POLYVALENTE AVEC CORPS DE BRULEUR ET CORPS DE LANCE DE SOUFFLAGE COULISSANTS

Publication

EP 1080236 A1 (DE)

Application

EP 99927699 A

Priority

  • DE 9901202 W
  • DE 19817590 A

Abstract (en)

[origin: DE19817590C1] The invention relates to a lance for processing liquid molten metal baths located in metallurgical tanks, comprising an internal guide tube for feeding gases, more particularly oxygen, having a lance mouth for blowing the gas, wherein the lance has a burner nozzle formed in the head end area of the mouth of the lance for executing a burner function with the purpose of guiding the gas through. The invention aims at providing protection of the burner nozzles against material splashes. To this end, the internal guide pipe (11) having a first cooling jacket (14) is configured as a first lance body (10) and the fuel gas channels (18) having a second cooling jacket (20) are configured as a second lance body (17). The first lance body (10) is mounted in the second lance body (17) and can be shifted from a raised position in which it operates as a burner to a lowered position in which it operates as a blower and in which the burner nozzles (19) are covered by the first lance body (10) that projects downwards in relation to the end of the second lance body (17).

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

C21C 5/52; C21C 5/46; C21C 7/10; F27B 3/08; F27B 3/20

IPC 8 full level (invention and additional information)

C21C 5/46 (2006.01); C21C 5/48 (2006.01); C21C 7/072 (2006.01); C21C 7/10 (2006.01); F27B 3/22 (2006.01)

CPC (invention and additional information)

C21C 7/10 (2013.01); C21C 5/4606 (2013.01)

Citation (search report)

See references of WO 9954511A1

Designated contracting state (EPC)

AT BE DE ES FR GB IT LU NL SE

EPO simple patent family

DE 19817590 C1 19990318; AT 219156 T 20020615; BR 9909769 A 20010130; CN 1214120 C 20050810; CN 1305536 A 20010725; EP 1080236 A1 20010307; EP 1080236 B1 20020612; ES 2180305 T3 20030201; RU 2211248 C2 20030827; US 6368550 B1 20020409; WO 9954511 A1 19991028

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- Owner name: SIEMENS VAI METALS TECHNOLOGIES GMBH

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