EP 2013369 A2 20090114 - METHOD FOR PRODUCING LIQUID PIG IRON OR LIQUID STEEL INTERMEDIATE PRODUCTS FROM FINE-PARTICLED MATERIAL CONTAINING IRON OXIDE
Title (en)
METHOD FOR PRODUCING LIQUID PIG IRON OR LIQUID STEEL INTERMEDIATE PRODUCTS FROM FINE-PARTICLED MATERIAL CONTAINING IRON OXIDE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM ROHEISEN ODER FLÜSSIGEN STAHLVORPRODUKTEN AUS FEINTEILCHENFÖRMIGEM EISENOXIDHÄLTIGEM MATERIAL
Title (fr)
PROCÉDÉ DE PRODUCTION DE FONTE LIQUIDE OU DE DEMI-PRODUITS EN ACIER LIQUIDE À PARTIR D'UN MATÉRIAU SOUS FORME DE FINES PARTICULES CONTENANT DE L'OXYDE DE FER
Publication
Application
Priority
- EP 2007003426 W 20070419
- AT 7322006 A 20060428
Abstract (en)
[origin: WO2007124870A2] The invention relates to a method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide. The fine-particled material containing iron oxide is pre-reduced in at least one pre-reduction step with the aid of a reduction gas and is subsequently reduced in an end reduction step to form sponge iron. Said sponge iron is melted in a melt-down gasification area with carbon supports and oxygen-containing gas and a reduction gas containing CO- and H<SUB>2 </SUB>that is produced is introduced into an end reduction step, reacted there, and drawn off, subsequently introduced into at least one pre-reduction step, reacted there and drawn off. In order to produce the melt-down gasifier with a high output, the production process runs in a stable manner and necessary partial combustions in the reduction gas lines are prevented. According to the invention, an amount of the fine-particled material containing iron oxide is introduced into at least one pre-reduction step and one end-reduction step in a melt-down gasification area and an additional amount of the fine-particled material containing iron oxide is directly or, together with the carbon supports and the oxygen-containing gas, introduced into the melt-down gasification area. The invention also relates to a device for carrying out said method.
IPC 8 full level
C21B 13/00 (2006.01); C21B 13/14 (2006.01)
CPC (source: EP KR US)
C21B 13/00 (2013.01 - KR); C21B 13/002 (2013.01 - EP US); C21B 13/0033 (2013.01 - EP US); C21B 13/14 (2013.01 - KR); C21B 13/143 (2013.01 - EP US); C21B 2100/282 (2017.04 - EP US); C21B 2100/44 (2017.04 - EP US); C21B 2100/64 (2017.04 - EP US); Y02P 10/122 (2015.11 - US); Y02P 10/134 (2015.11 - EP US)
Citation (search report)
See references of WO 2007124870A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007124870 A2 20071108; WO 2007124870 A3 20080320; AT 503593 A1 20071115; AT 503593 B1 20080315; AU 2007245912 A1 20071108; AU 2007245912 B2 20110224; BR PI0710936 A2 20120214; CA 2650424 A1 20071108; CN 101437965 A 20090520; CN 101437965 B 20120321; EP 2013369 A2 20090114; JP 2009535498 A 20091001; KR 20090007778 A 20090120; MX 2008013574 A 20081104; RU 2008146999 A 20100610; RU 2445377 C2 20120320; UA 93549 C2 20110225; US 2009090217 A1 20090409; US 2011285067 A1 20111124; US 8016910 B2 20110913; ZA 200808967 B 20091230
DOCDB simple family (application)
EP 2007003426 W 20070419; AT 7322006 A 20060428; AU 2007245912 A 20070419; BR PI0710936 A 20070419; CA 2650424 A 20070419; CN 200780015332 A 20070419; EP 07724363 A 20070419; JP 2009506955 A 20070419; KR 20087029282 A 20081128; MX 2008013574 A 20070419; RU 2008146999 A 20070419; UA A200813194 A 20070419; US 201113198844 A 20110805; US 29859207 A 20070419; ZA 200808967 A 20070419