Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants

Abstract

The present invention provides increased recovery in additive-enhanced or alloy-enhanced molten steel. This is accomplished by deoxidizing powders blended with the additive alloys. The deoxidizing powder reacts with the oxygen, thereby depleting the oxygen in this region. The alloy or additive region is enriched, thereby improving the recovery in the molten steel.

1 . An alloy delivery device, comprising:
 at least one additive alloy; and   at least one deoxidizing agent, the deoxidizing agent being blended with the alloy to provide a blended substance; and   an elongated sheath around the blended substance.   
     
     
         2 . The alloy delivery device of  claim 1 , wherein the at least one additive alloy is selected from the group consisting of: FeNb, FeV, and FeTi. 
     
     
         3 . The alloy delivery device of  claim 1 , wherein the deoxidizing agent is selected from the group consisting of: Ca, CaSi, Si, Al, and CaCN 2 . 
     
     
         4 . The alloy delivery device of  claim 1 , wherein the at least one deoxidizing agent is a powder comprised of particles having a diameter of less than one millimeter. 
     
     
         5 . The alloy delivery device of  claim 1 , wherein the at least one additive alloy is comprised of ground powder particles having a diameter of less than one millimeter. 
     
     
         6 . The alloy delivery device of  claim 1 , wherein the at least one deoxidizing agent is present in an amount of 5 to 50% of the mixture by weight or volume. 
     
     
         7 . A method of providing an additive alloy to molten metal comprising:
 blending at least one deoxidizing agent with at least one additive alloy to provide a blended substance;   encasing the deoxidizing agent and additive alloy blend in a metal sheath to provide an alloy delivery device;   producing molten metal;   providing the alloy delivery device into the molten metal.   
     
     
         8 . The method of  claim 7 , wherein the molten metal is steel. 
     
     
         9 . The method of  claim 7 , wherein the at least one deoxidizing agent is selected from the group consisting of: Ca, CaSi, Si, Al, and CaCN 2 . 
     
     
         10 . The method of  claim 7 , wherein the at least one additive alloy is selected from the group consisting of: FeNb, FeV, and FeTi. 
     
     
         11 . The method of  claim 7 , wherein the method further comprises the step of allowing the casing to melt. 
     
     
         12 . The method of  claim 7 , wherein the method further comprises the step of dispersing the blended substance.