EP 0530552 B1 19950222 - Process for desulfuration treatment of molten pig iron.
Title (en)
Process for desulfuration treatment of molten pig iron.
Title (de)
Verfahren zur Behandlung von Roheisenschmelzen zu deren Entschwefelung.
Title (fr)
Procédé pour le traitement de désulfuration de foute en fusion.
Publication
Application
Priority
DE 4128499 A 19910828
Abstract (en)
[origin: EP0530552A1] The invention relates to a process for treating molten pig iron for desulphurisation thereof in a vessel. The characteristic of the invention is that the treatment is carried out in three phases: In the initial phase, those solids are blown in which deoxidise the initial slag and increase its basicity, and effect a circulating motion of the melt or form a basic deoxidised covering slag. In the middle phase, a desulphurising agent is blown in for the main desulphurisation and, in the final phase, those solids are blown in which purify the melt and effect a final desulphurisation and affect the resulting desulphurisation slag in such a way that its content of iron granules is low. <IMAGE>
IPC 1-7
IPC 8 full level
C21C 1/02 (2006.01)
CPC (source: EP US)
C21C 1/025 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0530552 A1 19930310; EP 0530552 B1 19950222; AT E118825 T1 19950315; CA 2076743 A1 19930301; CZ 263892 A3 19930317; CZ 281703 B6 19961211; DE 4128499 A1 19930304; DE 4128499 C2 19941124; DE 59201454 D1 19950330; ES 2071393 T3 19950616; HU 216171 B 19990428; HU 9202762 D0 19921228; HU T65147 A 19940428; PL 169938 B1 19960930; PL 295696 A1 19930405; RO 115651 B1 20000428; RU 2096484 C1 19971120; SK 263892 A3 19960508; SK 281718 B6 20010710; UA 32411 C2 20001215; US 5366539 A 19941122; ZA 926214 B 19930301
DOCDB simple family (application)
EP 92113707 A 19920812; AT 92113707 T 19920812; CA 2076743 A 19920824; CS 263892 A 19920826; DE 4128499 A 19910828; DE 59201454 T 19920812; ES 92113707 T 19920812; HU 9202762 A 19920827; PL 29569692 A 19920821; RO 9201141 A 19920828; SK 263892 A 19920826; SU 5052484 A 19920827; UA 93003112 A 19910828; US 93171692 A 19920818; ZA 926214 A 19920818