Abstract A method and apparatus are provided for treatment of molten metal with reactive materials by the steps of adding a molten metal and reactive materials to a rotating drum, passing the mixture from one end of the drum to the other while subjecting the same to centrifugal force sufficient to overcome gravity and maintain it in contact with the drum, subjecting said mixture to a radially directed magnetic force intermediate the ends of the drum sufficient to overcome centrifugal force and cause the mixture to fall radially from the drum top and removing the mixture at the said other end of the drum. The apparatus provides a rotating drum, means for rotating the drum at a speed sufficient to hold the contents therein by centrifugal force on the walls of the drum, feed means for delivering metal and reactive material to the drum interior at one end, and a magnetic field intermediate the end of the drum creating a radial force on the metal sufficient to overcome centrifugal force.
An apparatus for treating molten metal with reactive materials comprising a rotating drum, means for rotating the drum at a speed sufficient to overcome the effect of gravity and hold the contents therein By centrifugal force on the walls of the drum, feed means delivering molten metal and reactive materials to one end of said drum, a magnetic field intermediate the ends of the drum creating a radially directed magnetic force on the molten metal in said drum sufficient to overcome the centrifugal force in the drum to cause the contents to fall from the top of the drum.
Claim 2
Dependent Claim
18 words
An apparatus as claimed in claim 2 having a receiving furnace at the other end of said drum.
Claim 3
Dependent Claim
22 words
An apparatus as claimed in claim 2 wherein a stationary coil surrounds the drum intermediate its ends to form said magnetic field.
Claim 4
Dependent Claim
27 words
An apparatus as claimed in claim 2 wherein coil windings are embedded in the wall of the rotating drum intermediate its ends to form said magnetic field.
Claim 5
Dependent Claim
25 words
An apparatus as claimed in claim 2 wherein the magnetic field is created by a plurality of successive coils surrounding the drum intermediate its ends.
Claim 6
Dependent Claim
15 words
An apparatus as claimed in claim 6 wherein successive coils have opposite directions of winding.
Claim 7
Dependent Claim
19 words
An apparatus as claimed in claim 2 wherein the magnetic field is derived from an alternating current line frequency.