SYSTEM AND METHOD FOR ATOMIZING A TITANIUM-BASED MATERIAL

摘要

A system and method for atomizing a titanium-based material to particulates in a controlled atmosphere. The system includes a crucible for skull melting a titanium-based material. The molten titanium-based material is transferred to a tundish for receiving the molten titanium-based material. The tundish has a bottom portion with an aperture formed therein and is heated. A molten metal nozzle for forming the molten titanium-based material into a free-falling stream exiting from the tundish is provided, the molten metal nozzle being coaxially aligned with the aperture of the tundish. A baffle may be disposed in the tundish for stabilizing the free-falling stream of the molten titanium-based material. The molten titanium-based material is atomized by impinging the free-falling stream of the molten titanium-based material with an inert gas jet issuing from a gas nozzle. The system also includes a device for cooling the atomized titanium-based material, and a device for collecting the cooled atomized titanium-based material, In the method, titanium is skull melted in a crucible. The molten titanium-based material is transferred to a heated tundish. The molten titanium-based material may be stabilized in the heated tundish and then formed into a free-falling stream. The free-falling stream of the molten titanium-based material is impinged with an inert gas jet to atomize the molten titanium-based material. The method also includes cooling the atomized titanium-based material, and collecting the cooled atomized titanium based material.