The production of stainless steel generates million tons of slag each year that contain various valuable elements, primarily chromium. Due to economic and environmental aspects, the recovery of the chromium represents an important task in order to increase the efficiency of raw material usage. A pyrometallurgical reduction process can recover the chromium from the slag
phase into a ferroalloy. Furthermore, such a process enables the
possibility to adjust the slags’ mechanical properties to achieve a marketable product for construction purposes. However, in order to operate the process in an economical feasible way, the treatment time must be minimized to decrease the costs of the process. The present work contains kinetic considerations with respect to the chromium recovery and evaluates the influence of various parameters like the process temperature and the slags' composition.