Patent ID: 6056803
Filing Date: 2000-05-02
Classification: B01F,C22B,F27D

Abstract:
An injector for injecting gas into a molten metal, comprising:a rotor that is rotatable about an axis of rotation, said rotor having a cylindrical projection-free side surface, a bottom surface, and an internal cavity for receiving molten metal located centrally of the rotor with respect to said axis of rotation;a plurality of openings in said side surface spaced around the rotor for ejecting molten metal and gas from said rotor upon rotation of said rotor about said axis of rotation;at least one opening in the bottom surface communicating with said cavity permitting entry of molten metal into said cavity;a plurality of passages disposed in the rotor interconnecting said cavity and said openings in said side surface; anda gas passageway for introducing gas into molten metal present within said rotor;wherein said gas passageway, lacking direct communication with said cavity, has at least one outlet opening into at least one of said plurality of passages.