EP 1204768 A1 20020515 - METAL OXIDE REDUCTION METHOD AND DEVICE THEREFOR
Title (en)
METAL OXIDE REDUCTION METHOD AND DEVICE THEREFOR
Title (de)
VERFAHREN ZUR REDUKTION VON METALLOXYDEN UND VORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE REDUCTION D'OXYDES METALLIQUES ET DISPOSITIF POUR LA MISE EN OEUVRE DU PROCEDE
Publication
Application
Priority
EP 9905438 W 19990728
Abstract (en)
[origin: WO0109394A1] The invention concerns a method for reducing metal oxides in a ring-shaped rotary hearth furnace, wherein a carbonaceous reducing agent and metal oxides are deposited on a strip over part of said rotary hearth and then transported in a substantially helical motion towards a discharge device. Said method is characterised in that part of the reducing agent is preheated and mixed with the preheated metal oxides before and/or during the deposit in the form a mixture on the rotary hearth, and a second part of the carbonaceous reducing agent and carbon monoxide are used for reducing the metal oxides.
IPC 1-7
IPC 8 full level
C21B 13/10 (2006.01); F27B 9/16 (2006.01); F27B 9/38 (2006.01); F27B 9/39 (2006.01)
CPC (source: EP KR)
C21B 13/08 (2013.01 - KR); C21B 13/10 (2013.01 - EP); Y02P 10/134 (2015.11 - EP); Y02P 10/20 (2015.11 - EP)
Citation (search report)
See references of WO 0109394A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0109394 A1 20010208; AU 5289499 A 20010219; BR 9917437 A 20020618; CA 2379267 A1 20010208; CN 1361832 A 20020731; EP 1204768 A1 20020515; JP 2003505602 A 20030212; KR 20020019957 A 20020313; MX PA02000930 A 20020730
DOCDB simple family (application)
EP 9905438 W 19990728; AU 5289499 A 19990728; BR 9917437 A 19990728; CA 2379267 A 19990728; CN 99816824 A 19990728; EP 99938375 A 19990728; JP 2001513649 A 19990728; KR 20027001164 A 20020128; MX PA02000930 A 19990728