Heat reflectivity control for atomization process

Details Heat reflectivity control for atomization process Heat reflectivity control for atomization process

1992-06-15

1994-01-25

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

Spray refining means

266236, C21C 100

Patent

active

052808840

ABSTRACT:
An atomization apparatus for atomization of melts of high melting metal is taught. The apparatus includes a melt guide tube adapted to guide a molten metal from a source to an atomization zone where the molten metal is gas atomized. The melt guide tube has an inwardly tapered lower end disposed above the atomization zone. An annular gas supply means is disposed around the melt guide tube. The annular gas supply includes a gas shield for directing gas from an annular plenum of said means toward the lowermost portion of said melt guide tube. The external surface of the gas shield and the external inwardly tapered surface of the melt guide tube are spaced from each other. A highly reflective surface layer is formed on the confronting surfaces of the gas shield and melt guide tube to restrict loss of radiant heat from metal passing through said melt guide tube.

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