EP 3807426 A1 20210421 - PRODUCING CARBURIZED SPONGE IRON BY MEANS OF HYDROGEN-BASED DIRECT REDUCTION
Title (en)
PRODUCING CARBURIZED SPONGE IRON BY MEANS OF HYDROGEN-BASED DIRECT REDUCTION
Title (de)
HERSTELLUNG VON KARBURIERTEM EISENSCHWAMM MITTELS WASSERSTOFFBASIERTER DIREKTREDUKTION
Title (fr)
FABRICATION D'ÉPONGE DE FER CARBURÉE PAR RÉDUCTION DIRECTE À BASE D'HYDROGÈNE
Publication
Application
Priority
- EP 18177161 A 20180612
- EP 2019065283 W 20190612
Abstract (en)
[origin: CA3103187A1] The invention relates to a process for producing carburized directly reduced iron sponge from iron oxide material. Firstly, direct reduction is carried out by means of a reduction gas consisting at least predominantly of H2 and the carbon content in the iron sponge is then increased by means of a carburizing gas which is fed in, after which used carburizing gas is at least partly taken off while largely avoiding mixing with the reduction gas. The plant for producing carburized directly reduced iron sponge from iron oxide material comprises a reduction zone for directly reducing introduced iron oxide material to directly reduced product by means of reduction gas consisting predominantly of H2 and a reduction gas feed conduit opening into the reduction zone. It also comprises a carburization zone having a carburizing gas feed conduit opening into the carburization zone and a carburization offgas conduit.
IPC 8 full level
C21B 13/00 (2006.01); C21B 13/02 (2006.01)
CPC (source: EP US)
B22D 7/005 (2013.01 - US); C21B 13/004 (2013.01 - EP); C21B 13/0073 (2013.01 - EP US); C21B 13/0086 (2013.01 - EP); C21B 13/0093 (2013.01 - EP US); C21B 13/02 (2013.01 - US); C21B 13/029 (2017.04 - EP); C21B 2100/26 (2017.04 - EP US)
Citation (search report)
See references of WO 2019238720A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3581663 A1 20191218; AU 2019286552 A1 20201217; CA 3103187 A1 20191219; EP 3807426 A1 20210421; MX 2020013294 A 20210222; US 2021246521 A1 20210812; WO 2019238720 A1 20191219
DOCDB simple family (application)
EP 18177161 A 20180612; AU 2019286552 A 20190612; CA 3103187 A 20190612; EP 19728718 A 20190612; EP 2019065283 W 20190612; MX 2020013294 A 20190612; US 201916972916 A 20190612