| 54 |
Title |
TI |
[EN] METHOD FOR THE OPERATION OF A SHAFT FURNACE, AND SHAFT FURNACE SUITABLE FOR SAID METHOD |
| 71/73 |
Applicant/owner |
PA |
THYSSENKRUPP AT PROTEC GMBH, DE
|
| 72 |
Inventor |
IN |
BABICH ALEXANDER, DE
;
GUNDENAU HEINRICH-WILHELM, DE
;
HELDT HANS-HEINRICH, DE
;
KONIG GERD, DE
;
KONIG WOLFRAM, DE
;
SENK DIETER GEORG, DE
|
| 22/96 |
Application date |
AD |
Nov 9, 2006 |
| 21 |
Application number |
AN |
200801076 |
|
Country of application |
AC |
EA |
|
Publication date |
PUB |
Apr 30, 2010 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
DE
102005053505
Nov 9, 2005
|
33
31
32 |
PRC
PRN
PRD |
EP
2006010752
Nov 9, 2006
|
| 51 |
IPC main class |
ICM |
C21B 5/00
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
C21B 11/02
(2006.01)
F27B 1/16
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
C21B 11/02
C21B 5/00
C21B 5/001
F27B 1/16
F27B 1/26
F27D 19/00
|
|
MCD main class |
MCM |
C21B 5/00
(2006.01)
|
|
MCD secondary class |
MCS |
C21B 11/02
(2006.01)
F27B 1/16
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] Method for operating a shaft furnace, whereby an upper section of the shaft furnace is charged with raw materials which due to gravity descend inside the shaft furnace while the atmosphere prevailing within the shaft furnace causes part of the raw materials to melt and/or to be reduced, and in a lower section of the shaft furnace a process gas is injected so as to at least partly modify the atmosphere prevailing in the shaft furnace, characterized in that the injection of the process gas is dynamically modulated in a manner whereby in the modulation the process variables, pressure p and/or volume flow {dot over (V)}, are varied at least intermittently within a time span of <=5 s and most desirably <=1 s. |
| 56 |
Cited documents identified in the search |
CT |
LU000000069212A1
EP000000992754A2
EP000001035392A2
US000004031183A
WO002001036891A2
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
PIPATMANOMAI S. ET AL.: "Investigation of coal conversion under conditions simulating the raceway of a blast furnace using a pulsed air injection, wire-mesh reactor" ENERGY FUELS; ENERGY AND FUELS MARCH/APRIL 2003, vol. 17, no. 2, March 2003 (2003-03), pages 489-497, XP002442344 the whole document 0
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
C21B 11/02
C21B 5/00
F27B 1/16
|
