Method and apparatus for metallurgical alloy additions

Claim 1

THE PROCESS OF INCORPORATING ADDITIVE MATERIAL TO A MOLTEN METAL COMPRISING, PROVIDING A CHANNEL MIXING TROUGH HAVING A SMALL CROSS SECTIONAL AREA WITH RESPECT TO THE LENGTH THEREOF, INTRODUCING UNTREATED MOLTEN METAL INTO A FIRST END OF SAID TROUGH AT A FIRST RATE TO FORM A STREAM, INTRODUCING SLAG FORMING ADDITIVE MATERIAL TO THE SURFACE OF THE STREAM AT AN ADDITIVE POINT DOWNSTREAM FROM THE SAID FIRST END OF THE TROUGH AND AT A RATE RELATED TO THE RATE OF MOLTEN METAL FLOWING PAST OF SAID ADDITIVE POINT, ALLOWING THE FLOW OF MOLTEN METAL TO CARRY THE ADDITIVE MATERIAL DOWN-STREAM AWAY FROM SAID ADDITIVE POINT, PERMITTING THE SLAG AND SOME MOLTEN METAL TO ESCAPE SAID TROUGH FROM THE SURFACE OF SAID STREAM AT A SECOND END OF THE TROUGH AND AT A SECOND RATE, REGULATING SAID FIRST AND SECOND RATES TO MAINTAIN A PRE-DETERMINED DEPTH OF MOLTEN METAL STREAM AND RATE OF FLOW THROGH SAID CHANNEL, AND SKIMMING THE SLAG FROM THE SURFACE OF THE STREAM.