EP 0877822 B1 20010307 - 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: US6179896B1] In a method of producing molten pig iron (9) or steel pre-products from lump ore which in at least one reduction zone is reduced to partially and/or completely reduced sponge iron (4) in a shaft furnace, the sponge iron (4) is melted down in a melt-down gasifying zone (8) of a melter gasifier (1) under supply of carbon-containing material (2) and oxygen and while simultaneously forming a reducing gas. To ensure that there will be a specific gap volume in the bed (13) of solid carbon carriers (2) even when charging fine-particle sponge iron (14) and hence that the bed (13) of solid carbon carriers (2) will be thoroughly flown through by gas, at least the sponge iron (4) is charged to the melt-down gasifying zone (8) discontinually, under formation of areas (14) of piled-up sponge iron which are embedded in the bed (13) of carbon carriers (2) and which are superposed and which are separated by solid carbon carriers (2), wherein each of the areas (14) of piled-up sponge iron while sparing a cross section zone (15) of the melt-down gasifying zone (8) extends over the cross section of the same and wherein the reducing gas forming the melt-down gasifying zone (8) flows past the areas (14) of piled-up sponge iron under melting of the same and upwards through the cross section zones (15) that are free from sponge iron and formed from carbon carriers (2), and flows through these zones.
IPC 1-7
IPC 8 full level
C21B 13/14 (2006.01); C21B 13/00 (2006.01)
CPC (source: EP KR US)
C21B 13/00 (2013.01 - KR); C21B 13/002 (2013.01 - EP US)
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