Patent ID: 6960239

Claim:
Apparatus for the treatment of molten metal with a particulate treatment agent and a gas, comprising a melting or holding furnace for molten metal, a rotary device for breaking up particulate treatment agent and gas within molten metal, and for dispersing particulate treatment agent and gas within molten metal within the vessel and means for supplying the particulate treatment agent and gas to the rotary device, wherein the rotary device comprises a hollow shaft mounted at an angle to the horizontal and extending through an opening in a side of the furnace, said hollow shaft having a rotor with an axial opening fixed to the discharge end thereof, said rotor comprising an annular plate with a plurality of radially mounted, upwardly directed blades projecting from the top face of the annular plate and a plurality of radially mounted downwardly directed blades projecting from the bottom face of the annular plate.