Global Patent Index - EP 1027462 A1

EP 1027462 A1 2000-08-16 - METHOD AND DEVICE FOR CONTROLLING THE FORMATION OF FOAMED SLAG IN AN ARC FURNACE

Title (en)

METHOD AND DEVICE FOR CONTROLLING THE FORMATION OF FOAMED SLAG IN AN ARC FURNACE

Title (de)

VERFAHREN UND EINRICHTUNG ZUR STEUERUNG DER SCHAUMSCHLACKEBILDUNG IN EINEM LICHTBOGENOFEN

Title (fr)

PROCEDE ET DISPOSITIF PERMETTANT DE REGULER LA FORMATION DE LAITIER MOUSSEUX DANS UN FOUR A ARC

Publication

EP 1027462 A1 (DE)

Application

EP 98958815 A

Priority

  • DE 9803062 W
  • DE 19748310 A

Abstract (en)

[origin: DE19748310C1] The invention relates to a method and device for controlling the formation of foamed slag in an arc furnace (5) to which the carbon is fed in such a way that the arc is at least partially enveloped in the arc furnace (5) and an over abundant feeding of carbon is avoided. The quantity of the carbon which is fed to the arc furnace is thus determined by means of a foamed slag model (25) according to the quantity of at least one of the coating materials comprised of scrap metal, steel, alloy material or admixtures.

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

C21C 5/52; C21C 5/54; H05B 7/148

IPC 8 full level (invention and additional information)

C21C 5/52 (2006.01); F27B 3/10 (2006.01); F27B 3/28 (2006.01); C21C 5/36 (2006.01); C21C 7/00 (2006.01)

CPC (invention and additional information)

F27B 3/10 (2013.01); C21C 5/5217 (2013.01); F27B 3/28 (2013.01); C21C 7/0025 (2013.01); C21C 2005/366 (2013.01); C21C 2300/02 (2013.01); Y02P 10/216 (2015.11)

Citation (search report)

See references of WO 9923264A1

Designated contracting state (EPC)

AT BE DE FR GB IE IT NL SE

EPO simple patent family

DE 19748310 C1 19981217; EP 1027462 A1 20000816; WO 9923264 A1 19990514

INPADOC legal status


2002-07-31 [18R] REFUSED

- Effective date: 20020223

2001-05-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010412

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000417

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE FR GB IE IT NL SE