EP 0843020 A1 19980520 - Double hearth electric arc furnace for continuous melting
Title (en)
Double hearth electric arc furnace for continuous melting
Title (de)
Doppel-Herd Elektro-Lichtbogenofen zum kontinuierlichen Schmelzen
Title (fr)
Four à arc électrique à double sole pour la fusion en continu
Publication
Application
Priority
IT UD960218 A 19961113
Abstract (en)
Electric arc furnace to continuously melt steel and its alloys including at least a first body (11) comprising an upper zone (35) for the loading of the raw material (17) and a lower zone (36) for the melting and the first refining of the molten metal, and at least a second body (12) including a zone (37) with the function of decanting and refining the liquid metal and with a tapping hole (30) for the liquid metal, the first (11) and second (12) bodies forming a single body connected by means of a channel (13) through which the liquid metal is transferred, the upper zone (35) of the first body (11) cooperating at least with loading means (24), the first (11) and second (12) bodies including at least a respective central and vertical electrode (14,114) and relative anodes (15) located on the bottom part, the first body (11) including on the side walls heating burners (22) and supersonic lances (23) to blow in oxygen and the second body (12) including on the bottom part tuyères (26) to blow in carbon, the loading means (24) to load the raw material (17) being of the continuous type and associated with means to stir and distribute (19, 20) the raw material (17) in a homogeneous manner, the channel (13) being associated with means to regulate the flow from one body (11) to the other (12). <IMAGE>
IPC 1-7
IPC 8 full level
C21C 5/52 (2006.01); C21C 5/56 (2006.01); F27D 13/00 (2006.01)
CPC (source: EP)
C21C 5/5252 (2013.01); C21C 5/565 (2013.01); F27D 13/002 (2013.01)
Citation (search report)
- [Y] EP 0240485 A1 19871007 - VOEST ALPINE AG [AT]
- [Y] EP 0548041 A2 19930623 - VOEST ALPINE IND ANLAGEN [AT]
- [YD] WO 9619592 A1 19960627 - ARCMET TECH GMBH [AT], et al
- [YD] FR 1482929 A 19670602 - SIDERURGIE FSE INST RECH
- [A] EP 0451323 A2 19911016 - BLUFIN SRL [IT]
- [A] EP 0626549 A1 19941130 - LORRAINE LAMINAGE [FR]
- [AD] WO 9632505 A1 19961017 - VOEST ALPINE IND ANLAGEN [AT], et al
Designated contracting state (EPC)
AT BE DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0843020 A1 19980520; EP 0843020 B1 20020417; AT E216433 T1 20020515; DE 69712020 D1 20020523; ES 2172727 T3 20021001; IT 1289021 B1 19980925; IT UD960218 A0 19961113; IT UD960218 A1 19980513
DOCDB simple family (application)
EP 97119472 A 19971106; AT 97119472 T 19971106; DE 69712020 T 19971106; ES 97119472 T 19971106; IT UD960218 A 19961113