Abstract: In a method of treating alloyed carbon-containing iron melts for the production of steel, whereby a carbon-containing iron melt is subjected in a metallurgical vessel to a decarburization by addition of oxygen and a part of the metallic alloying elements is slagged, whereby the metal melt is withdrawn from the metallurgical vessel while the unreduced slag remains in the metallurgical vessel and then the metallurgical vessel is filled with a new charge or iron melt and subjected anew to a decarburization process so that the loss of expensive metallic alloying elements as a result of decarburization is small because of the slagging. This is achieved in that without intervening removal of the slag, the slag is increasingly, saturated with metal oxides which derive from the melt and such that with increasing saturation the slagging of the metallic alloying elements is increasingly counteracted.

Abstract: A method for recovering metallic chromium from slags which contain chromium oxide from converter processes, such as AOD, MRP, AOD-L, MRP-L, CLU, ASM, Conarc stainless steel or vacuum processes, such as VOD, SS-VOD, RH, RH with lanze, includes drawing off the slag which is produced at the end of a blowing or treatment operation in a converter or a vacuum installation in unreduced form. The slag is charged into an electric furnace, which is also charged with a standard charge of scrap and, if appropriate, dust residues. Carbon and, if appropriate, silicon are additionally added to the electric furnace.

Abstract: A method of slag-free teeming of metal melt includes arranging outside of the metal vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance an inclination of which relative to a bath surface in the vessel and spacing from the discharge edge is changeable and injecting, through the discharge opening of the melt vessel, immediately before start of the teeming process and during the teeming process, a fluid jet having a high kinetic pulse energy substantially parallel to the bath surface for forcing a slag melt, which is located in a discharge region of the vessel and covers the metal melt, back.

Abstract: A method of slag-free teeming of metal melt includes arranging outside of the metal vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance an inclination of which relative to a bath surface in the vessel and spacing from the discharge edge is changeable and injecting, through the discharge opening of the melt vessel, immediately before start of the teeming process and during the teeming process, a fluid jet having a high kinetic pulse energy substantially parallel to the bath surface for forcing a slag melt, which is located in a discharge region of the vessel and covers the metal melt, back.