Abstract: An end-piece for an additive guide tube is disclosed. Such an end piece may have a durable sleeve and a sloughable sleeve. The sloughable sleeve may have a channel through which an additive may be delivered, and the sloughable sleeve may reside in the through-hole of the durable sleeve and may be secured to the durable sleeve. When molten metal contacts the sloughable sleeve, the sloughable sleeve burns or melts and sloughs off, thereby preventing the molten metal and slag from sticking to the end-piece, which in turn prevents buildup of metal and slag.

Abstract: The present invention provides increased recovery in additive-enhanced or alloy-enhanced molten steel. This is accomplished by dispersing agents blended with the additive alloys. The dispersant powder reacts with the carbon in the steel forming carbon monoxide gas which provides kinetic energy to the additive alloy particle causing dispersion within the molten bath, resulting in greater dissolution of the particles in the molten bath. The alloy or additive region is enriched, thereby improving the recovery in the molten steel.

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.