IMMERSIBLE NOZZLE WITH INVERSELY DIRECTED RHOMB-SHAPED INNER GEOMETRY, BUILT-UP IMMERSIBLE NOZZLE WITH VARIABLE EFFECTIVE DISCHARGING ANGLES AND METHOD FOR PASSING MELT METAL THROUGH IT Russian patent published in 2002 - IPC

FIELD: metallurgy, namely systems for supplying metal to crystallizer. SUBSTANCE: immersible nozzle includes elongated duct having at least one inlet port, at least one upper discharging port and at least one lower discharging port. Guiding partition is arranged near upper discharging port and it divides melt metal flow passing through duct at least by one outer stream and central stream. Outer stream passes through upper discharging port; central stream bypasses guiding partition and it is directed towards lower discharging port. Guiding partition provides possibility for distributing part of melt metal divided by outer and central streams in such a way that effective angle of discharging outer stream leaving upper discharging port changes in dependence upon volume of melt-metal flow passing through immersible nozzle. Invention provides enhanced distribution of speed values of supplied melt metal, prevents formation of standing wave in crystallizer and slag trapping. EFFECT: enhanced quality of ingot. 48 cl, 66 dwg