EP 2089549 A2 20090819 - MICROWAVE HEATING METHOD AND APPARATUS FOR IRON OXIDE REDUCTION
Title (en)
MICROWAVE HEATING METHOD AND APPARATUS FOR IRON OXIDE REDUCTION
Title (de)
MIKROWELLENERHITZUNGSVERFAHREN UND -VORRICHTUNG FÜR DIE REDUKTION VON EISENOXID
Title (fr)
PROCÉDÉ DE CHAUFFAGE MICRO-ONDES ET APPAREIL DE RÉDUCTION DE L'OXYDE DE FER
Publication
Application
Priority
- US 2007021254 W 20071003
- US 84909806 P 20061003
- US 86567206 P 20061114
Abstract (en)
[origin: WO2008051356A2] A method and apparatus for reducing iron oxides using microwave heating in a furnace chamber which is sealed against the entrance of air reduces trie energy required and produces a low temperature reduction and allows the recovery of combustible synthetic gas as a byproduct of the process. Avoidance of the reduction of sulfur, phorphorus and silica is also insured, as is the need to reduce the silica content of the feed material prior to reducing the ore. A continuous rotary hearth furnace, a rotary kiln, a linear conveyor and vertical shaft furnace chamber configurations are described. A secondary heating zone can also be included to process the reduced iron into iron nuggets or liquid metallic iron.
IPC 8 full level
C21B 11/00 (2006.01)
CPC (source: EP)
C21B 13/0046 (2013.01); C21B 13/08 (2013.01); C21B 13/105 (2013.01); C21B 13/143 (2013.01); C21C 5/567 (2013.01); F27B 7/34 (2013.01); F27B 9/16 (2013.01); F27B 9/36 (2013.01); C21B 2100/42 (2017.04); C21B 2100/66 (2017.04); Y02P 10/122 (2015.11); Y02P 10/134 (2015.11)
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
DOCDB simple family (publication)
WO 2008051356 A2 20080502; WO 2008051356 A3 20090305; AU 2007309609 A1 20080502; AU 2007309609 B2 20120315; BR PI0717798 A2 20140617; CN 101548024 A 20090930; CN 101548024 B 20131120; EP 2089549 A2 20090819; EP 2089549 A4 20110302
DOCDB simple family (application)
US 2007021254 W 20071003; AU 2007309609 A 20071003; BR PI0717798 A 20071003; CN 200780044701 A 20071003; EP 07839202 A 20071003