EP 1224335 A1 20020724 - METHOD FOR DIRECT REDUCTION OF MATERIALS CONTAINING IRON OXIDE
Title (en)
METHOD FOR DIRECT REDUCTION OF MATERIALS CONTAINING IRON OXIDE
Title (de)
VERFAHREN ZUR DIREKTREDUKTION EISENOXIDHALTIGEN MATERIALS
Title (fr)
PROCEDE DE REDUCTION DIRECTE DE MATERIAUX CONTENANT DE L'OXYDE DE FER
Publication
Application
Priority
- AT 181699 A 19991028
- EP 0009726 W 20001005
Abstract (en)
[origin: WO0131069A1] The invention relates to a method for direct reduction of materials containing iron oxide using a reduction gas containing CO and H2 in at least one fluidized bed reduction zone, whereby the used reduction gas containing CO2 coming out of the at least one fluidized bed reduction zone is recirculated and a fresh reduction gas is produced by CO2 reforming of the used reduction gas and a gas containing methane, especially natural gas. CO2 reforming and direct reduction are carried out at a pressure of at least 4 bar overpressure in order to substantially prevent carbon formation and deposition and in order to keep the size of the reactor receiving the reduction zone small, whereby the reduction zone is exposed to an amount of reduction gas complying with metallurgical requirements.
IPC 1-7
IPC 8 full level
C01B 3/38 (2006.01); C21B 13/00 (2006.01)
CPC (source: EP KR)
C21B 13/00 (2013.01 - KR); C21B 13/0033 (2013.01 - EP); Y02P 10/122 (2015.11 - EP); Y02P 10/134 (2015.11 - EP); Y02P 10/143 (2015.11 - EP)
Citation (search report)
See references of WO 0131069A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0131069 A1 20010503; AT 407879 B 20010725; AT A181699 A 20001115; AU 1021301 A 20010508; CA 2388847 A1 20010503; EP 1224335 A1 20020724; JP 2003512532 A 20030402; KR 20020045617 A 20020619; MX PA02004227 A 20021216
DOCDB simple family (application)
EP 0009726 W 20001005; AT 181699 A 19991028; AU 1021301 A 20001005; CA 2388847 A 20001005; EP 00971317 A 20001005; JP 2001533202 A 20001005; KR 20027005406 A 20020426; MX PA02004227 A 20001005