Global patent index - EP 1055006 A1

EP 1055006 A1 2000-11-29 - FLUIDIZED BED TYPE FINE IRON ORE REDUCING APPARATUS, AND METHOD THEREFOR

Title (en)

FLUIDIZED BED TYPE FINE IRON ORE REDUCING APPARATUS, AND METHOD THEREFOR

Title (de)

VERFAHREN UND VORRICHTUNG DES TYPS EINES FLUIDATBETTES ZUR REDUKTION VON FEINEM EISENERZ

Title (fr)

APPAREIL DE REDUCTION DE MINERAI DE FER FIN DE TYPE A LIT FLUIDISE ET PROCEDE AFFERENT

Publication

EP 1055006 A1 (EN)

Application

EP 99957428 A

Priority

  • KR 9900729 W
  • KR 19980053955 A

Abstract (en)

[origin: WO0034531A1] A fluidized bed type reducing apparatus for reducing a fine iron ore of a wide particle size distribution includes a first fluidized bed type furnace (210) for a first reduction of only coarse/intermediate iron ores and a second fluidized bed type furnace (220) for the reduction of the iron ores of the first fluidized bed type furnace (210). A first cyclone (240) captures fine iron ore particles from the discharge gas of the first fluidized bed type furnace (210) and a second cyclone (250) captures those from that of the second fluidized bed type furnace (220). In a third fluidized bed type furnace (230) the fine iron ore particles are reduced which have been captured by the first and second cyclones (240 and 250). A third cyclone (260) captures the extremely fine iron ore particles discharged from the third fluidized bed type furnace (230) to recycle them to the third fluidized bed type furnace (230).

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

C21B 13/14

IPC 8 full level (invention and additional information)

C21B 11/02 (2006.01); C21B 13/00 (2006.01); C21B 13/06 (2006.01); C21B 13/14 (2006.01)

CPC (invention and additional information)

C21B 13/002 (2013.01); C21B 13/0033 (2013.01); C21B 13/14 (2013.01); Y02P 10/136 (2015.11); Y02P 10/216 (2015.11)

Citation (search report)

See references of WO 0034531A1

Designated contracting state (EPC)

AT DE GB IT LU SE

EPO simple patent family

WO 0034531 A1 20000615; AU 1513200 A 20000626; BR 9907794 A 20001024; CA 2320242 A1 20000615; EP 1055006 A1 20001129; JP 2002531705 A 20020924; KR 20000038827 A 20000705; ZA 200004742 B 20010315

INPADOC legal status

2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): AT DE GB IT LU SE

2003-01-08 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020702

2000-11-29 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000825

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE