EP 0877822 A1 19981118 - PROCESS FOR PRODUCING LIQUID PIG IRON OR SEMIFINISHED STEEL PRODUCTS FROM ORE
Title (en)
PROCESS FOR PRODUCING LIQUID PIG IRON OR SEMIFINISHED STEEL PRODUCTS FROM ORE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM ROHEISEN ODER STAHLVORPRODUKTEN AUS ERZ
Title (fr)
PROCEDE DE TRANSFORMATION DE MINERAIS DE FER EN FONTE BRUTE LIQUIDE OU EN PRODUITS BRUTS EN ACIER
Publication
Application
Priority
- AT 9700237 W 19971105
- AT 196296 A 19961108
- AT 196396 A 19961108
Abstract (en)
[origin: WO9821370A1] In a process for producing liquid pig iron (9) or semifinished steel products from ore reduced into partially and/or totally reduced sponge iron (4) in at least one reduction zone, the sponge iron (4) is molten in a gasification zone (8) of a melting gasifier (1) to which carbon-containing materials (2) and oxygen are supplied, at the same time as a reduction gas is formed. In order to maintain a particular void volume in the bed (13) of solid carbon-containing materials (2) even when finely divided sponge iron (14) is charged, and thus to ensure a good gasification of the bed (13) of solid carbon-containing materials (2), at least the sponge iron (4) is intermittently introduced into the gasification zone (8), forming superimposed layers (14) of sponge iron embedded in the bed (13) of carbon-containing materials (2) and separated by solid carbon-containing materials (2). The sponge iron layers (14) extend over the cross-section of the gasification zone (8), leaving free an area (15) of the cross-section. The reduction gas generated in the gasification zone (8) flows upwards past the sponge iron layers (14), melting the same, through the sections (15) of the cross-section formed by carbon-containing materials (2) and free from sponge iron, gasifying the same.
IPC 1-7
IPC 8 full level
C21B 13/00 (2006.01); C21B 13/14 (2006.01)
CPC (source: EP KR US)
C21B 13/00 (2013.01 - KR); C21B 13/002 (2013.01 - EP US)
Citation (search report)
See references of WO 9821370A1
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
WO 9821370 A1 19980522; AT E199573 T1 20010315; AU 4855697 A 19980603; AU 731008 B2 20010322; BR 9707114 A 19990720; CA 2242375 A1 19980522; CA 2242375 C 20090317; CN 1055503 C 20000816; CN 1207138 A 19990203; CZ 213298 A3 19990714; CZ 288112 B6 20010411; DE 59703104 D1 20010412; EP 0877822 A1 19981118; EP 0877822 B1 20010307; ID 27675 A 20010419; JP 2000503352 A 20000321; JP 4498470 B2 20100707; KR 100458552 B1 20050406; KR 19990077106 A 19991025; MY 117002 A 20040430; PL 185226 B1 20030430; PL 327830 A1 19990104; RU 2175674 C2 20011110; SK 283076 B6 20030204; SK 93698 A3 19981202; TR 199801275 T1 19981221; TW 357194 B 19990501; UA 43905 C2 20020115; US 6179896 B1 20010130
DOCDB simple family (application)
AT 9700237 W 19971105; AT 97911044 T 19971105; AU 4855697 A 19971105; BR 9707114 A 19971105; CA 2242375 A 19971105; CN 97191621 A 19971105; CZ 213298 A 19971105; DE 59703104 T 19971105; EP 97911044 A 19971105; ID 980036 D 19971105; JP 52193698 A 19971105; KR 19980705242 A 19980708; MY PI9705187 A 19971103; PL 32783097 A 19971105; RU 98114828 A 19971105; SK 93698 A 19971105; TR 9801275 T 19971105; TW 86117859 A 19971127; UA 98073476 A 19971105; US 10115098 A 19980701