EP 0093039 B1 19880601 - PROCESS FOR INCREASING THE GAS-PERMEABILITY OF FIRE-PROOF ELEMENTS IN THE BOTTOMS OF METALLURGICAL VESSELS, AND MATERIALS FOR CARRYING IT OUT
Title (en)
PROCESS FOR INCREASING THE GAS-PERMEABILITY OF FIRE-PROOF ELEMENTS IN THE BOTTOMS OF METALLURGICAL VESSELS, AND MATERIALS FOR CARRYING IT OUT
Publication
Application
Priority
FR 8207117 A 19820422
Abstract (en)
[origin: ES8402616A1] For improving permeability of a metallurgical vessel bottom provided with permeable refractory elements for controlled injection of a stirring fluid into a molten metal bath, the metallurgical vessel is emptied of its contents, a castable composed of a refractory material compatible with the refractory material of the bottom is deposited in the bottom and spread over the latter, and the castable is left to dry and set, while maintaining in the permeable refractory elements a sufficient pressure to provide a permanent flow of a stirring fluid. A hydraulic magnesian refractory castable used in this method has a content of water of substantially between 8 and 10% by weight.
IPC 1-7
IPC 8 full level
C21C 5/32 (2006.01); C21C 5/35 (2006.01); C21C 5/44 (2006.01); C21C 5/34 (2006.01); C21C 5/48 (2006.01); F27D 1/16 (2006.01); F27D 1/00 (2006.01); F27D 3/16 (2006.01)
CPC (source: EP KR US)
C21C 5/35 (2013.01 - EP US); C21C 5/44 (2013.01 - EP KR US); F27D 1/16 (2013.01 - EP US); F27D 1/003 (2013.01 - EP US); F27D 2003/161 (2013.01 - EP US); F27M 2003/025 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE GB NL SE
DOCDB simple family (publication)
EP 0093039 A1 19831102; EP 0093039 B1 19880601; AT E34774 T1 19880615; BE 896538 A 19830816; BR 8302046 A 19831227; CA 1206007 A 19860617; DE 3376850 D1 19880707; ES 521715 A0 19840201; ES 521716 A0 19840201; ES 8402616 A1 19840201; ES 8402617 A1 19840201; FR 2525632 A1 19831028; FR 2525632 B1 19840824; IT 1194213 B 19880914; IT 8320767 A0 19830422; IT 8320767 A1 19841022; JP H0368925 B2 19911030; JP S59104418 A 19840616; KR 840004455 A 19841015; KR 910003514 B1 19910603; LU 84741 A1 19831205; US 4696456 A 19870929; US 4779846 A 19881025; ZA 832761 B 19831228
DOCDB simple family (application)
EP 83400765 A 19830418; AT 83400765 T 19830418; BE 6047816 A 19830421; BR 8302046 A 19830420; CA 426383 A 19830421; DE 3376850 T 19830418; ES 521715 A 19830421; ES 521716 A 19830421; FR 8207117 A 19820422; IT 2076783 A 19830422; JP 7133183 A 19830422; KR 830001713 A 19830422; LU 84741 A 19830411; US 48684583 A 19830420; US 5275587 A 19870520; ZA 832761 A 19830419