EP 1153148 A1 20011114 - METHOD FOR PRODUCING LIQUID PIG IRON
Title (en)
METHOD FOR PRODUCING LIQUID PIG IRON
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM ROHEISEN
Title (fr)
PROCEDE DE PRODUCTION DE FONTE BRUTE LIQUIDE
Publication
Application
Priority
- AT 11899 A 19990128
- EP 9908654 W 19991111
Abstract (en)
[origin: WO0044947A1] The invention relates to a method for producing liquid pig iron, whereby lumpy materials containing iron oxide are reduced to sponge iron in a direct reduction zone by using a reduction gas. The sponge iron is melted down into liquid pig iron in a melt-down gasification zone while feeding carbon carriers and oxygenous gases thereto, and a generator gas containing CO and H2 is generated. Said generator gas is drawn out of the melt-down gasification zone and is introduced as reduction gas into the direct reduction zone after a dedusting process. A partial stream of dedusted reduction gas is subjected to a gas washing process. Agglomerates containing zinc oxide and iron oxide are introduced into the direct reduction zone and/or into the melt-down gasification zone and/or dust particles containing zinc are injected into the generator gas which is drawn out of or which is to be drawn out of the melt-down gasification zone. In addition, zinc which is carried along is removed as slurry containing zinc from the reduction gas during the gas washing of the dedusted reduction gas. The inventive method makes it possible to economically utilize recyclings containing zinc which are produced in steel works.
IPC 1-7
IPC 8 full level
C21B 13/14 (2006.01); C21C 5/56 (2006.01); C22B 7/02 (2006.01)
CPC (source: EP)
C21B 13/002 (2013.01); C21B 13/14 (2013.01); C21C 5/56 (2013.01); C22B 7/02 (2013.01); C21B 2100/44 (2017.04); C21B 2100/60 (2017.04); Y02P 10/20 (2015.11)
Citation (search report)
See references of WO 0044947A1
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 0044947 A1 20000803; AT 407162 B 20010125; AT A11899 A 20000515; AU 1775000 A 20000818; EP 1153148 A1 20011114; TW 505700 B 20021011
DOCDB simple family (application)
EP 9908654 W 19991111; AT 11899 A 19990128; AU 1775000 A 19991111; EP 99960969 A 19991111; TW 88121027 A 19991129