EP 0050578 B1 19840321 - APPARATUS FOR THE TREATMENT OF A MOLTEN METAL BATH BY GAS INJECTION
Title (en)
APPARATUS FOR THE TREATMENT OF A MOLTEN METAL BATH BY GAS INJECTION
Publication
Application
Priority
FR 8022193 A 19801014
Abstract (en)
[origin: ES8207229A1] The present invention concerns apparatus for treating a bath of liquid metal and in particular aluminum or alloys thereof by injecting gas, comprising a rotary agitator, the lower end of which, in the rest condition, rests on a gas injection plug disposed at the bottom of the bath and which, under the action of the pressure of the gas emitted by the plug, rises and, thus being supported by a fluid bearing, may, under the effect of an external couple, rotate freely about its axis and allow a multitude of regularly dispersed gas bubbles to escape through the space which separates the agitator from the plug, enabling intimate contact between the gas and the liquid metal and thus to improve the efficiency of the treatment. It may be used in treating metals from which hydrogen and non-metallic impurities are to be removed.
IPC 1-7
IPC 8 full level
C21C 7/00 (2006.01); C21C 7/072 (2006.01); C22B 9/05 (2006.01); C22B 21/06 (2006.01); F27D 27/00 (2010.01)
CPC (source: EP KR US)
B22D 27/13 (2013.01 - KR); C22B 9/05 (2013.01 - EP US); C22B 21/06 (2013.01 - KR); C22B 21/064 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE GB IT LI NL
DOCDB simple family (publication)
EP 0050578 A1 19820428; EP 0050578 B1 19840321; AU 540945 B2 19841206; AU 7628281 A 19820422; CA 1165117 A 19840410; DE 3162821 D1 19840426; ES 506075 A0 19820901; ES 8207229 A1 19820901; FR 2491954 A1 19820416; FR 2491954 B1 19821022; GR 75823 B 19840802; IN 155192 B 19850112; JP S5792146 A 19820608; JP S6160904 B2 19861223; KR 830007187 A 19831014; NO 813447 L 19820415; OA 06917 A 19830531; RO 83654 A 19840315; RO 83654 B 19840330; US 4372541 A 19830208; YU 243581 A 19831031
DOCDB simple family (application)
EP 81420150 A 19811013; AU 7628281 A 19811013; CA 387802 A 19811013; DE 3162821 T 19811013; ES 506075 A 19811007; FR 8022193 A 19801014; GR 810166263 A 19811013; IN 963CA1981 A 19810827; JP 16257981 A 19811012; KR 810003860 A 19811013; NO 813447 A 19811013; OA 57512 A 19811008; RO 10550981 A 19811008; US 30386881 A 19810921; YU 243581 A 19811009