EP 0182730 B1 19900912 - BLAST FURNACE OPERATION PROCESS
Title (en)
BLAST FURNACE OPERATION PROCESS
Publication
Application
Priority
FR 8418075 A 19841121
Abstract (en)
[origin: US4707183A] A blast furnace, especially for the production of hot metal for the steel industry and operated with a normal charge above the tuyere blast zone, has its hot metal production increased at least temporarily by a lateral injection of metal oxides into the zone. A supply of the thermal energy requirements for the smelting reduction of these metal oxides by electrically operated plasma torches, and the compensation of a overoxygenation resulting from the oxygen contribution of these metal oxides by the introduction of nitrogen.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C21B 5/002 (2013.01 - EP US); C21B 5/023 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0182730 A1 19860528; EP 0182730 B1 19900912; AT E56473 T1 19900915; BR 8505820 A 19860812; CA 1256703 A 19890704; DE 3579672 D1 19901018; FR 2573437 A1 19860523; FR 2573437 B1 19890915; JP S61199006 A 19860903; SU 1500165 A3 19890807; US 4707183 A 19871117; ZA 858727 B 19860730
DOCDB simple family (application)
EP 85440065 A 19851107; AT 85440065 T 19851107; BR 8505820 A 19851120; CA 495796 A 19851120; DE 3579672 T 19851107; FR 8418075 A 19841121; JP 26099185 A 19851120; SU 3976890 A 19851120; US 80046585 A 19851121; ZA 858727 A 19851113