EP 0061749 A1 19821006 - A multi-step steelmaking refining method.
Title (en)
A multi-step steelmaking refining method.
Title (de)
Feinungsperiode bei einem mehrstufigen Stahlerzeugungsverfahren.
Title (fr)
Méthode d'affinage dans un procédé multi-étapes d'élaboration d'acier.
Publication
Application
Priority
- JP 4702381 A 19810330
- JP 8933181 A 19810610
- JP 8933381 A 19810610
Abstract (en)
A multi-step steel-making refining method consisting in decarburization of molten pig iron, which has been desiliconized and dephosphorized, carried out in a reaction vessel (1) by means of an oxygen top-blowing method, and blowing of a stirring fluid beneath the level of the molten pig iron within the reaction vessel (1) during the decarburization treatment at a stirring power of not less than 400 watts per ton of the molten pig iron.
IPC 1-7
IPC 8 full level
B22D 1/00 (2006.01); C21C 1/00 (2006.01); C21C 5/28 (2006.01); C21C 5/56 (2006.01); C21C 1/04 (2006.01)
CPC (source: EP)
B22D 1/005 (2013.01); C21C 1/00 (2013.01); C21C 5/285 (2013.01); C21C 5/567 (2013.01); C21C 1/04 (2013.01)
Citation (search report)
- FR 2311852 A1 19761217 - VACMETAL GMBH [DE]
- LU 43212 A1 19630418
- FR 2439821 A1 19800523 - NIPPON STEEL CORP [JP]
- Revue de Metallurgie, Vol. 74, No. 4, April 1977 K. SASAKI et al.: "La Dephosphoration de la Fonte en Poche" pages 255-261 * page 258, column 2, parshtsph 2 - page 260, column 1, paragraph 1 *
- PATENTS ABSTRACTS OF JAPAN, Vol. 3, No. 152 (C-67), December 14. 1979, page 106 C67; & JP-A-54 130 420
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
EP 0061749 A1 19821006; EP 0061749 B1 19860226; AU 532932 B2 19831020; AU 8184882 A 19821104; DE 3269285 D1 19860403
DOCDB simple family (application)
EP 82102580 A 19820326; AU 8184882 A 19820324; DE 3269285 T 19820326