EP 2047000 A1 20090415 - METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS
Title (en)
METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS
Title (de)
VERFAHREN UND SYSTEM ZUR HERSTELLUNG VON EISENKLUMPEN
Title (fr)
PROCÉDÉ ET SYSTÈME POUR FABRIQUER DES PÉPITES DE FER MÉTALLIQUES
Publication
Application
Priority
- US 2007074471 W 20070726
- US 82036606 P 20060726
Abstract (en)
[origin: WO2008014397A1] Method and system for producing metallic nuggets includes providing reducible mixture of reducing material (such as carbonaceous material) and reducible iron bearing material (such as iron oxide) arranged in discrete portions, such as mounds or briquettes, on at least a portion of a hearth material layer (such as carbonaceous material). A coarse overlayer of carbonaceous material is provided over at least some of the discrete portions. Heating the discrete portions of reducible mixture to 1425 °C or 1400 °C or 1375 °C results in formation of an intermediate product of metallic iron nuggets and slag, and one or more metallic iron nuggets. The intermediate product with less than 5% mass MgO in the slag may have the ratio of percent by weight sulfur in the slag over percent sulfur in the metallic nuggets of at least about 12 or at least about 15. The metallic iron nuggets may have a sulfur content of less than 0.03%.
IPC 8 full level
C21B 13/00 (2006.01); C21B 13/10 (2006.01)
CPC (source: EP)
C21B 13/0046 (2013.01); C21B 13/008 (2013.01); C21B 13/105 (2013.01)
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 2008014397 A1 20080131; AU 2007279272 A1 20080131; AU 2007279272 B2 20120426; CA 2658897 A1 20080131; CA 2658897 C 20160412; EP 2047000 A1 20090415; EP 2047000 A4 20100414; EP 2500441 A1 20120919; EP 2690181 A1 20140129
DOCDB simple family (application)
US 2007074471 W 20070726; AU 2007279272 A 20070726; CA 2658897 A 20070726; EP 07813408 A 20070726; EP 12004528 A 20070726; EP 13005096 A 20070726