EP 1541699 B1 20090121 - METHOD FOR STIRRING STEEL
Title (en)
METHOD FOR STIRRING STEEL
Title (de)
VERFAHREN ZUM RÜHREN VON STAHL
Title (fr)
PROCEDE DE BRASSAGE DE L'ACIER
Publication
Application
Priority
- RU 0200400 W 20020829
- RU 2002108332 A 20020403
Abstract (en)
[origin: RU2208054C1] FIELD: ferrous metallurgy. SUBSTANCE: method involves blasting steel from below with gas or gas-powder mixture through at least two blasting devices arranged in diametrically opposed sides of ladle, with blasting being carried out in succession, at first through one blasting device positioned at one side of ladle, with following blasting through other blasting device positioned at other side of ladle; maintaining pressure in blasting device, which is not operating at the moment, at the level preventing metal from flowing into said device; increasing blasting device changing over period with increase in weight of steel in ladle; keeping volume of gas constant during changing over of supplying gas or gas-powder mixture from one blasting device to another blasting device. Method is used for processing of metal in ladle outside furnace. EFFECT: wider active zone of contacting gas or gas-powder mixture with metal, reduced time for obtaining homogenized metal composition without increase in amounts of gas supplied, and, accordingly, intensified mixing of steel in ladle during blasting with gas or gas-powder mixture. 3 cl, 4 dwg
IPC 8 full level
C21C 7/072 (2006.01); B22D 1/00 (2006.01); C21C 1/06 (2006.01); C21C 7/00 (2006.01); F27D 3/16 (2006.01); F27D 3/18 (2006.01); F27D 27/00 (2010.01)
CPC (source: EP)
B22D 1/002 (2013.01); B22D 1/005 (2013.01); C21C 1/06 (2013.01); C21C 7/0075 (2013.01); C21C 7/072 (2013.01); F27D 3/16 (2013.01); F27D 3/18 (2013.01); F27D 27/00 (2013.01); F27D 2027/002 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1541699 A1 20050615; EP 1541699 A4 20050921; EP 1541699 B1 20090121; AT E421598 T1 20090215; AU 2002332367 A1 20031013; DE 50213248 D1 20090312; ES 2321071 T3 20090602; RU 2208054 C1 20030710; UA 77545 C2 20061215; WO 03083145 A1 20031009
DOCDB simple family (application)
EP 02768214 A 20020829; AT 02768214 T 20020829; AU 2002332367 A 20020829; DE 50213248 T 20020829; ES 02768214 T 20020829; RU 0200400 W 20020829; RU 2002108332 A 20020403; UA 20041210939 A 20020829