Global Patent Index - EP 1243361 A1

EP 1243361 A1 2002-09-25 - Apparatus for injecting gas into molten metal

Title (en)

Apparatus for injecting gas into molten metal

Title (de)

Vorrichtung zum Einleiten von Gasen in eine Metallschmelze

Title (fr)

Dispositif pour introduire un gaz dans un métal liquide

Publication

EP 1243361 A1 (EN)

Application

EP 01870054 A

Priority

EP 01870054 A

Abstract (en)

The invention concerns an apparatus (1) for injecting gas into molten metal through a molten metal-contacting surface (11) comprising i) a porous refractory body (2) substantially surrounded by a substantially non-porous body (9) except at the molten metal-contacting surface (11); and ii) gas conducting means (3,5) for conveying the gas from a gas source to the porous body (2). The apparatus is characterized in that the non-porous body (11) is made of refractory material and in that the porous and non-porous bodies (2,11) have been co-pressed. This apparatus can be used to inject efficiently and reliably small bubbles into a molten metal bath. <IMAGE>

IPC 1-7 (main, further and additional classification)

B22D 1/00

IPC 8 full level (invention and additional information)

B22D 11/10 (2006.01); B22D 1/00 (2006.01); C21C 5/48 (2006.01); C21C 7/00 (2006.01); C21C 7/072 (2006.01)

CPC (invention and additional information)

B22D 1/005 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1243361 A1 20020925; AR 032983 A1 20031203; AT 301014 T 20050815; BR 0208100 A 20040302; BR 0208100 B1 20110906; CA 2440404 A1 20020926; CA 2440404 C 20090609; CN 1296157 C 20070124; CN 1496292 A 20040512; DE 60205350 D1 20050908; DE 60205350 T2 20060601; EP 1372888 A1 20040102; EP 1372888 B1 20050803; ES 2243701 T3 20051201; HU 0303607 A2 20040301; HU 0303607 A3 20050530; HU 228285 B1 20130228; JP 2004531396 A 20041014; KR 100874397 B1 20081217; KR 20030081527 A 20031017; MX PA03008488 A 20031208; PL 202712 B1 20090731; PL 364828 A1 20041227; RU 2003127675 A 20050410; RU 2277591 C2 20060610; TW 584615 B 20040421; US 2004100004 A1 20040527; WO 02074470 A1 20020926; ZA 200306069 B 20040806

INPADOC legal status


2002-10-23 [18W] APPLICATION WITHDRAWN

- Date of withdrawal: 20020827

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI