EP 0861337 B1 20010801 - METHOD FOR DECARBURIZING STEELS MELTS
Title (en)
METHOD FOR DECARBURIZING STEELS MELTS
Title (de)
VERFAHREN ZUR ENTKOHLUNG VON STAHLSCHMELZEN
Title (fr)
PROCEDE DE DECARBURATION DE MASSES D'ACIER FONDU
Publication
Application
Priority
- DE 9602165 W 19961106
- DE 19544166 A 19951117
- DE 19548641 A 19951213
Abstract (en)
[origin: WO9719197A1] The invention concerns a method of decarburizing steel melts in a closed metallurgical vessel connected to a vacumm pump and into which oxygen can be supplied by means of a lance and combustible materials by means of a feed device. The method calls for the following steps: a) the melt is poured into the vessel, the pressure reduced continously to less than 100 mbar and oxygen blown in in order to burn off the carbon, the oxygen being blown in in predefined excess, in addition to the supplementary oxygen used during the decarburization phase; b) at the moment when the oxygen is in partial excess, metallic combustion material is supplied, distributed uniformly throughout the melt. The invention also concerns a device which includes sensors (21 and 29), located in the closable vessel, for the measurement of the melt temperature (T) and pressure (P), respectively, and which are connected via a measurement and control unit (22) to control elements (23, 25) for supplying oxygen (O2) and metallic combustion materials (A).
IPC 1-7
IPC 8 full level
C21C 7/068 (2006.01); C21C 7/10 (2006.01); C22B 7/02 (2006.01)
CPC (source: EP KR US)
C21C 7/068 (2013.01 - KR); C21C 7/10 (2013.01 - EP KR US); F27D 2003/169 (2013.01 - KR); F27D 2019/0075 (2013.01 - KR)
Designated contracting state (EPC)
AT BE DE ES FR GB IT LU NL
DOCDB simple family (publication)
WO 9719197 A1 19970529; AT E203778 T1 20010815; AU 7620696 A 19970611; CN 1067438 C 20010620; CN 1203634 A 19981230; CZ 152598 A3 19990512; CZ 294517 B6 20050112; DE 19680993 D2 19990128; DE 59607427 D1 20010906; EP 0861337 A1 19980902; EP 0861337 B1 20010801; JP 2000500528 A 20000118; KR 100287568 B1 20010416; KR 19990067543 A 19990825; PL 192625 B1 20061130; PL 326635 A1 19981012; RU 2159819 C2 20001127; TW 403788 B 20000901; US 6235084 B1 20010522
DOCDB simple family (application)
DE 9602165 W 19961106; AT 96938974 T 19961106; AU 7620696 A 19961106; CN 96198781 A 19961106; CZ 152598 A 19961106; DE 19680993 T 19961106; DE 59607427 T 19961106; EP 96938974 A 19961106; JP 51928097 A 19961106; KR 19980703565 A 19980513; PL 32663596 A 19961106; RU 98111743 A 19961106; TW 85114022 A 19970428; US 7704098 A 19980724