EP 0006453 B1 19810603 - PROCESS FOR INCREASING THE LIFETIME OF FLUSH GAS LANCES WITH POROUS LANCE HEADS MADE OF GRAPHITE AND INERTION CAGE USED THEREFOR
Title (en)
PROCESS FOR INCREASING THE LIFETIME OF FLUSH GAS LANCES WITH POROUS LANCE HEADS MADE OF GRAPHITE AND INERTION CAGE USED THEREFOR
Publication
Application
Priority
DE 2827403 A 19780622
Abstract (en)
[origin: ES481712A1] The useful life is increased of gas scavenging lances having porous graphite flush heads for non-ferrous metal melts by flowing an inert gas, immediately after scavenging, through the lance in a de-energizing cage which surrounds the graphite parts of the lance while forming a narrow gap therewith until a temperature below the ignition temperature of graphite is obtained.
IPC 1-7
IPC 8 full level
B22D 1/00 (2006.01); C21C 7/072 (2006.01); C22B 9/05 (2006.01); C22B 21/06 (2006.01); F27D 1/16 (2006.01); F27D 3/16 (2006.01); F27D 23/02 (2006.01); F27D 25/00 (2010.01)
CPC (source: EP US)
B22D 1/005 (2013.01 - EP US); C22B 9/05 (2013.01 - EP US); F27D 1/1678 (2013.01 - EP US); F27D 3/16 (2013.01 - EP US); F27D 25/00 (2013.01 - EP US); F27D 2003/168 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH FR GB IT NL
DOCDB simple family (publication)
DE 2827403 B1 19790802; DE 2827403 C2 19800403; AT 377208 B 19850225; AT A388479 A 19840715; EP 0006453 A1 19800109; EP 0006453 B1 19810603; ES 481712 A1 19800216; JP S552798 A 19800110; US 4264057 A 19810428; ZA 793085 B 19800827
DOCDB simple family (application)
DE 2827403 A 19780622; AT 388479 A 19790528; EP 79101605 A 19790525; ES 481712 A 19790620; JP 7245079 A 19790611; US 4678079 A 19790608; ZA 793085 A 19790621