Global Patent Index - EP 1062369 A1

EP 1062369 A1 2000-12-27 - METHOD FOR PRODUCING LIQUID PIG IRON AND/OR STEEL BLANKS

Title (en)

METHOD FOR PRODUCING LIQUID PIG IRON AND/OR STEEL BLANKS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM ROHEISEN UND/ODER STAHLVORPRODUKTEN

Title (fr)

PROCEDE POUR LA PRODUCTION DE FONTE LIQUIDE ET/OU D'EBAUCHES D'ACIER

Publication

EP 1062369 A1 (DE)

Application

EP 99939141 A

Priority

  • AT 43698 A
  • EP 9901248 W

Abstract (en)

[origin: WO9946411A1] The invention relates to a method for producing liquid pig iron and/or steel blanks from materials containing iron oxide and optionally additives, preferably in the form of pieces and/or pellets. The feedstocks used are reduced to metallized iron ore in a reduction zone. The metallized iron ore is melted in a melt-down gasification zone with the addition of dried solid carbon carriers and oxygen-containing gases. A reduction gas containing CO and H2 is produced and fed into the reduction zone where it is reacted, drained off as top gas, gas washed and optionally supplied to a consumer as an export gas. Before it is washed, the top gas which is drained off from the reduction zone undergoes heat exchange with a heat exchanging fluid using all of its sensible heat. Solid carbon carriers (which are provided in order to be fed into the melt-down gasification zone) are dried with the warmed up heat exchanging fluid. The invention also relates to a system for carrying out the inventive method.

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

C21B 13/14

IPC 8 full level (invention and additional information)

C21B 13/14 (2006.01)

CPC (invention and additional information)

C21B 13/002 (2013.01); C21B 13/14 (2013.01); Y02P 10/122 (2015.11); Y02P 10/128 (2015.11); Y02P 10/136 (2015.11); Y02P 10/265 (2015.11); Y02P 10/283 (2015.11)

Citation (search report)

See references of WO 9946411A1

Designated contracting state (EPC)

DE GB IT LU

EPO simple patent family

WO 9946411 A1 19990916; AT 406964 B 20001127; AT A43698 A 20000315; AU 3254199 A 19990927; BR 9908629 A 20001205; CA 2322507 A1 19990916; CN 1292830 A 20010425; EP 1062369 A1 20001227; JP 2002506123 A 20020226; PL 342950 A1 20010716; TW 490489 B 20020611; ZA 9901939 B 19990927

INPADOC legal status


2002-04-17 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010829

2001-07-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010517

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000807

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB IT LU