EP 2986743 A1 20160224 - METHOD FOR THE PRODUCTION OF FERRO-ALLOYS WITH LOW CARBON CONTENT IN A VACUUM CONVERTER
Title (en)
METHOD FOR THE PRODUCTION OF FERRO-ALLOYS WITH LOW CARBON CONTENT IN A VACUUM CONVERTER
Title (de)
VERFAHREN ZUR HERSTEILUNG VON FERROLEGIERUNGEN MIT NIEDRIGEM KOHLENSTOFFGEHALT IN EINEM VAKUUM-KONVERTER
Title (fr)
PROCÉDÉ POUR LA PRODUCTION DE FERRO-ALLIAGES PRÉSENTANT UNE TENEUR RÉDUITE EN CARBONE DANS UN CONVERTISSEUR À VIDE
Publication
Application
Priority
- DE 102013006986 A 20130415
- DE 102013014856 A 20130902
- DE 2014000164 W 20140325
Abstract (en)
[origin: WO2014169888A1] The invention relates to a method for the production of ferro-alloys, particularly FeCr and FeMn alloys, with low carbon content in a vacuum converter. In the first stage, the melt is subjected to desiliconization and principal decarburization in the vacuum converter on the basis of the converter method under atmospheric conditions, wherein oxygen is injected into the melt via a top lance and oxygen and CO2 are injected into the melt via the nozzles, particularly annular gap nozzles, under the bath and subsequently, in a second stage, in the same converter the deep carburization phase takes place under a vacuum, wherein CO2 or CmH2m+2 is additionally injected on the protective gas side of the under-bath nozzles.
IPC 8 full level
C21C 5/35 (2006.01); C21C 7/068 (2006.01); C21C 7/10 (2006.01)
CPC (source: EP)
C21C 5/35 (2013.01); C21C 7/068 (2013.01); C21C 7/10 (2013.01)
Citation (search report)
See references of WO 2014169888A1
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)
DE 102013014856 A1 20141016; EP 2986743 A1 20160224; EP 2986743 B1 20170201; WO 2014169888 A1 20141023
DOCDB simple family (application)
DE 102013014856 A 20130902; DE 2014000164 W 20140325; EP 14724289 A 20140325