F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 3/16 (2006.01) C21C 5/46 (2006.01)
Patent
CA 2077473
BLOWING LANCE ABSTRACT A blowing lance, more particularly a lance for refining metals by blowing a gaz onto the surface of a metal bath is disclosed. This lance comprises an adjustable tuyere for generating a supersonic refining gas flow and a blowing head with a set of fixed tuyeres (29A, 29B) opening into a front dome of said blowing head and deviding the supersonic gas flow into individual free jets. A cyclic modulator (35, 37) modulates the flow rate through said set of tuyeres (29A, 29B) so that the flow rate in a first subset of tuyeres (29A) does not vary synchronously with the flow rate in a second susbset of tuyeres (29B), i.e. the flow rates in both susbsets of tuyeres increase or decrease at the same time and they do not reach their minimum value or their maximum value at the same moment. Fig. 4a and 4b
Bintner Patrick
Bock Andre
Mousel Robert
Arbed S.a.
Bereskin & Parr
Bintner Patrick
Bock Andre
Mousel Robert
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