EP 2871247 B1 20170510 - METHOD FOR OPERATING BLAST FURNACE
Title (en)
METHOD FOR OPERATING BLAST FURNACE
Title (de)
VERFAHREN ZUM BETRIEB EINES HOCHOFENS
Title (fr)
PROCÉDÉ DE FONCTIONNEMENT D'UN HAUT FOURNEAU
Publication
Application
Priority
- JP 2012149384 A 20120703
- JP 2013077526 A 20130403
- JP 2013067788 W 20130628
Abstract (en)
[origin: EP2871247A1] To provide a method for operating a blast furnace that allows an improvement in combustion rate of pulverized coal blown from a tuyere and a reduction in a reducing material basic unit. A method for operating a blast furnace blown from a tuyere via a lance, in which, when a blowing amount of the solid reducing material blown from the tuyere is not less than 150 kg/t per ton of pig iron, a double tube lance is used as the lance to blow the solid reducing material from an inner tube and blow oxygen of not higher than 100°C from between the inner tube and an outer tube, and pulverized coal having an average volatile matter content of more than 25 mass% and not more than 50 mass% is used as the blowing solid reducing material.
IPC 8 full level
C21B 7/16 (2006.01); C21B 5/00 (2006.01); C21B 7/00 (2006.01)
CPC (source: EP KR)
C21B 5/00 (2013.01 - EP); C21B 5/003 (2013.01 - EP KR); C21B 7/163 (2013.01 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2871247 A1 20150513; EP 2871247 A4 20150805; EP 2871247 B1 20170510; AU 2013284587 A1 20150219; AU 2013284587 B2 20150514; CN 104379770 A 20150225; CN 104379770 B 20160817; JP 5522325 B1 20140618; JP WO2014007152 A1 20160602; KR 101608231 B1 20160401; KR 20150023045 A 20150304; WO 2014007152 A1 20140109
DOCDB simple family (application)
EP 13813190 A 20130628; AU 2013284587 A 20130628; CN 201380032584 A 20130628; JP 2013067788 W 20130628; JP 2013553691 A 20130628; KR 20157001481 A 20130628