The production of stainless steel generates million tons of hazardous 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 as low as possible 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.