Thanks to its properties, steel is technically and economically irreplaceable in many applications. The resulting high demand asks for a sustainable and environmentally friendly production. The BOF-slag, which is obtained as a by-product in steel production, accumulates for metallurgical reasons and contains the oxides of valuable materials such as iron, chromium and phosphorus. The aim of this work is to show possibilities for the treatment of BOF-slag to recover these valuable resources and to influence the composition of the slag so that it fulfils the Austrian regulations and can be used, for example, in road construction instead of being disposed. For this purpose, two additives are examined for their suitability for basicity adaptation of the slag with regard to the resulting melting properties and the recovery potentials. The necessary tests were carried out in the InduMelt-plant, a lab-scale induction furnace developed at the Chair of Thermal Processing Technology at the Montanuniversitaet Leoben. The results of the experiments are very promising. Under certain conditions, the iron, chromium and phosphorus oxides were completely reduced and the total content of chromium in the residual slag was lower than 0,06%.