EP 1891246 A4 20091104 - PROCESSING OF METAL CHLORIDE SOLUTIONS AND METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON
Title (en)
PROCESSING OF METAL CHLORIDE SOLUTIONS AND METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON
Title (de)
VERARBEITUNG VON METALLCHLORIDLÖSUNGEN UND VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON DIREKTREDUZIERTEM EISEN
Title (fr)
TRAITEMENT DE SOLUTIONS DE CHLORURE METALLIQUE AINSI QUE PROCEDE ET APPAREIL PERMETTANT DE PRODUIRE DU FER DE REDUCTION DIRECTE
Publication
Application
Priority
- AU 2006000832 W 20060615
- AU 2005903124 A 20050615
Abstract (en)
[origin: WO2006133500A1] A process and apparatus for regeneration of acid and metal from spent acid liquors includes the steps of, optionally, concentrating (110) the liquor to a concentrated liquor or solid, pyrohydrolysing (114) to regenerate the acid and form metal oxide pellets, and reducing the oxide to metal in a two stage reduction reactor (116, 118) using a partially combusted fuel as reducing agent. Also disclosed is a two-stage reduction process and reactor for production of direct reduced iron (DRI) from iron oxide ores or wastes, including a first stage (416) in which the oxide feed is contacted with a fuel and a sub-stoichiometric amount of an oxygen source to produce a lower oxidation state oxide, and a second stage (418) in which the lower oxidation stage oxide is contacted with off-gases from the first stage to produce iron metal.
IPC 8 full level
C22B 5/18 (2006.01); C01B 7/03 (2006.01); C01G 49/02 (2006.01); C21B 15/00 (2006.01); C22B 5/14 (2006.01); C23G 1/36 (2006.01)
CPC (source: EP KR US)
C01B 7/03 (2013.01 - KR); C01B 7/035 (2013.01 - EP US); C01G 1/02 (2013.01 - EP US); C01G 49/02 (2013.01 - EP KR US); C01G 49/04 (2013.01 - EP US); C21B 13/0033 (2013.01 - EP US); C21B 13/0073 (2013.01 - EP US); C21B 13/146 (2013.01 - EP US); C21B 15/00 (2013.01 - KR); C22B 5/14 (2013.01 - EP US); C22B 5/18 (2013.01 - EP KR US); C22B 7/001 (2013.01 - EP US); C22B 7/006 (2013.01 - EP US); C23G 1/36 (2013.01 - EP US); Y02P 10/134 (2015.11 - EP US); Y02P 10/20 (2015.11 - EP US)
Citation (search report)
- [Y] FR 2131824 A1 19721117 - NICKEL LE
- [Y] WO 0238819 A2 20020516 - HATCH ASS LTD [CA], et al
- [Y] US 3044852 A 19620717 - FRANCIS CHARLES B
- [Y] AT 408764 B 20020325 - ENGINEERING INDUSTRIEANLAGEN P [AT]
- [XY] DE 3439070 A1 19860507 - KLOECKNER HUMBOLDT DEUTZ AG [DE]
- [X] WO 9203581 A1 19920305 - CYPRUS MINERALS CO [US]
- See references of WO 2006133500A1
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 NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006133500 A1 20061221; CA 2612158 A1 20061221; CN 101223293 A 20080716; EA 200800052 A1 20080630; EP 1891246 A1 20080227; EP 1891246 A4 20091104; JP 2008546906 A 20081225; KR 20080022550 A 20080311; MX 2007016009 A 20080404; US 2009095132 A1 20090416; ZA 200800391 B 20081231
DOCDB simple family (application)
AU 2006000832 W 20060615; CA 2612158 A 20060615; CN 200680025785 A 20060615; EA 200800052 A 20060615; EP 06752609 A 20060615; JP 2008516073 A 20060615; KR 20077029339 A 20071214; MX 2007016009 A 20060615; US 91728706 A 20060615; ZA 200800391 A 20080114