EP 2851437 A1 20150325 - METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE
Title (en)
METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE
Title (de)
VERFAHREN ZUM LADEN EINES ROHMATERIALS IN EINEN HOCHOFEN
Title (fr)
PROCÉDÉ POUR LE CHARGEMENT DE MATIÈRE PREMIÈRE DANS UN HAUT-FOURNEAU
Publication
Application
Priority
- JP 2012114860 A 20120518
- JP 2012114862 A 20120518
- JP 2013003165 W 20130517
Abstract (en)
According to the present invention, by setting the average layer thickness L av1 at each rotation of the rotating chute, calculated by Expression 1, to be smaller than the thickness h of coke charged into the shaft central portion of the blast furnace, it is possible to provide a method for charging raw material into a blast furnace that ensures gas permeability in the blast furnace, stabilizes blast furnace operations, and improves thermal efficiency even when the amount of coke is small, or an operation to blow in a large amount of pulverized coal is performed. Expression 1 is L av1 = V n /((R n 2 -R n-1 2 )À), where V n is the charged raw material volume (m 3 ) per rotation at the n th rotation, and R n is the falling radius (m) of charged raw material at the n th rotation.
IPC 8 full level
C21B 5/00 (2006.01); C21B 7/20 (2006.01); F27B 1/20 (2006.01)
CPC (source: EP KR)
C21B 5/006 (2013.01 - EP); C21B 5/008 (2013.01 - EP); C21B 7/002 (2013.01 - KR); F27B 1/20 (2013.01 - EP); C21B 7/20 (2013.01 - EP)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2851437 A1 20150325; EP 2851437 A4 20151216; EP 2851437 B1 20181003; CN 104302787 A 20150121; CN 104302787 B 20161005; JP 5574064 B2 20140820; JP WO2013172042 A1 20160112; KR 101592955 B1 20160211; KR 20150004907 A 20150113; TR 201816178 T4 20181121; WO 2013172042 A1 20131121
DOCDB simple family (application)
EP 13791416 A 20130517; CN 201380025729 A 20130517; JP 2013003165 W 20130517; JP 2013556706 A 20130517; KR 20147033494 A 20130517; TR 201816178 T 20130517