Process for pre-conditioning salvaged materials involves introducing an additive; and separating the salvaged materials from impurities. An Independent claim is also included for a device for carrying out the process comprising a shovel separator (1) for the pre-conditioning and separating the salvaged materials from impurities, and a frame-like base body (2) for purifying waste air. Preferred Features: The shovel separator is assigned to a self-travelling wheel loader (3). The frame-like base body is formed as a closed container having an opening through which the separator can be inserted into the base body.