EP 0166646 B1 19880727 - INSTALLATION FOR THE PRODUCTION OF STEEL BY PRELIMINARY REFINING OF PIG IRON
Title (en)
INSTALLATION FOR THE PRODUCTION OF STEEL BY PRELIMINARY REFINING OF PIG IRON
Publication
Application
Priority
FR 8409819 A 19840622
Abstract (en)
[origin: US4627601A] Installation according to the invention comprising a desilication and dephosphorization stage (A), followed by a decarburization stage and in which the pig iron to be pre-smelted is intended to form a bath whose free surface is maintained at a predetermined level (N1). The dephosphorization comprises a reactor (1) comprising means (5, 6, 8) respectively for introducing the pig iron to be pre-smelted, for adding desilication and dephosphorization agents, and for creating an oxidizing atmosphere, as well as rabbling means (9). It also comprises a decanter (2) separated from the reactor (1) by a partition (3) having an opening (4) below the level (N1) and whose upper end is above the latter. The decanter comprises an immersed outlet opening (10) connected to the decarburization stage and an overflow (12) for evacuating the slag. The slag formed in the reactor (1) flows out in the decanter (2), overflows above the partition (3), and moves toward the overflow (12) which evacuated it.
IPC 1-7
IPC 8 full level
C21C 1/02 (2006.01); C21C 1/00 (2006.01); C21C 1/04 (2006.01); C21C 5/56 (2006.01)
CPC (source: EP US)
C21C 1/00 (2013.01 - EP US); C21C 5/567 (2013.01 - EP US); C21C 1/04 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0166646 A1 19860102; EP 0166646 B1 19880727; AT E36007 T1 19880815; BR 8502988 A 19860304; DE 3563982 D1 19880901; FR 2566427 A1 19851227; FR 2566427 B1 19891013; JP S6176607 A 19860419; US 4627601 A 19861209
DOCDB simple family (application)
EP 85401122 A 19850607; AT 85401122 T 19850607; BR 8502988 A 19850621; DE 3563982 T 19850607; FR 8409819 A 19840622; JP 13581385 A 19850621; US 74811885 A 19850624