| 摘要 |
A rotary device for treating molten metal, said device comprising a hollow shaft at one end of which is a rotor, said rotor having:-
a roof and a base, said roof and base being spaced apart and connected by a plurality of dividers;
a passage being defined between each adjacent pair of dividers and the roof
and base, each passage having an inlet in an inner surface of the rotor and an outlet in a peripheral surface of the rotor, each outlet having a greater cross-sectional area than the respective inlet and being disposed radially outward therefrom;
a flow path being defined through the shaft into the inlets of the passages and out of the outlets; and
a chamber in which mixing of the molten metal and gas can take place;
wherein a plurality of first cut-outs are provided in the roof and a plurality of second cut outs are provided in the base, each of the first and second cut outs being contiguous with one of the passages. The invention also resides in the rotor per se, a metal treatment unit for degassing and/or for addition of metal treatment substances comprising the rotary device of the invention and a method of treating molten metal using the device. |
