EP 1029092 A1 20000823 - METHOD FOR PRODUCING DIRECTLY-REDUCED IRON, LIQUID PIG IRON AND STEEL
Title (en)
METHOD FOR PRODUCING DIRECTLY-REDUCED IRON, LIQUID PIG IRON AND STEEL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON DIREKT REDUZIERTEM EISEN, FLÜSSIGEM ROHEISEN UND STAHL
Title (fr)
PROCEDE POUR PRODUIRE DU FER DE REDUCTION DIRECTE, DE LA FONTE BRUTE LIQUIDE ET DE L'ACIER
Publication
Application
Priority
- AT 190497 A 19971110
- EP 9806792 W 19981026
Abstract (en)
[origin: WO9924627A1] According to the inventive method for producing directly-reduced iron, liquid pig iron and steel, input materials made up of iron ore, preferably in lump and/or pellet form and optionally, aggregates are directly reduced to sponge iron in a first reduction area. The sponge iron is melted into liquid pig iron in a melt down-gasification area, carbon carrier substances and oxygen-containing gas being added, and a reduction gas is produced. After waste gas cleaning, the reduction gas is introduced into the first reduction area, reacted and drawn off as top gas. The top gas is subjected to a waste gas cleaning process and optionally conveyed to an additional reduction area for direct reduction of iron ore to sponge iron, reacted with the iron ore, drawn off as export gas and subjected to waste gas cleaning again. The liquid pig iron and optionally the sponge iron from the additional reduction area are introduced into a steel production process, especially a steel production process carried out using the electrosteel technique, the waste gases from the steel production process being cleaned. The invention also relates to a device for carrying out this method.
IPC 1-7
IPC 8 full level
C04B 7/38 (2006.01); C21B 13/14 (2006.01); C21C 5/56 (2006.01); C22B 1/248 (2006.01); C22B 7/02 (2006.01)
CPC (source: EP KR US)
C21B 13/002 (2013.01 - EP US); C21B 13/14 (2013.01 - EP US); C21C 5/56 (2013.01 - EP US); C22B 7/02 (2013.01 - EP KR US); C21B 2100/282 (2017.04 - EP US); C21B 2100/44 (2017.04 - EP US); Y02P 10/134 (2015.11 - EP US); Y02P 10/20 (2015.11 - EP US)
Citation (search report)
See references of WO 9924627A1
Designated contracting state (EPC)
BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
WO 9924627 A1 19990520; AT 406272 B 20000327; AT A190497 A 19990815; AU 1155999 A 19990531; AU 751205 B2 20020808; BR 9813200 A 20000829; CA 2309606 A1 19990520; CN 1267568 C 20060802; CN 1278871 A 20010103; CZ 20001652 A3 20020116; EP 1029092 A1 20000823; ID 24503 A 20000720; JP 2001522938 A 20011120; KR 100557710 B1 20060307; KR 20010031922 A 20010416; PL 340539 A1 20010212; SK 6682000 A3 20001107; TR 200001283 T2 20010521; TW 474995 B 20020201; US 6395052 B1 20020528; ZA 9810208 B 19990528
DOCDB simple family (application)
EP 9806792 W 19981026; AT 190497 A 19971110; AU 1155999 A 19981026; BR 9813200 A 19981026; CA 2309606 A 19981026; CN 98811007 A 19981026; CZ 20001652 A 19981026; EP 98954449 A 19981026; ID 20000803 D 19981026; JP 2000519618 A 19981026; KR 20007005025 A 20000509; PL 34053998 A 19981026; SK 6682000 A 19981026; TR 200001283 T 19981026; TW 87118563 A 19981107; US 55404600 A 20000706; ZA 9810208 A 19981109