Patent ID: 8517724

Claim:
A process for removing the volatile components of the fine fraction coming from the separation of the residue from the crushing of vehicles and iron-containing scraps, comprising the following steps, carried out in a rotary-drum reactor having two cylindrical chambers with overlapping bases, initially preheated at temperatures comprised between 500 and 800° C. and 400 and 600° C., respectively: feeding said fine fraction into the first chamber; injecting and distributing into the first chamber a combustion supporter, by at least two radial nozzles arranged on a pipe coaxial to the first chamber, with partial combustion of the fine fraction, consequent partial removal of the volatile substances present therein and holding of the temperature of 500-800° C.; transferring the hot fine fraction, partially stripped of the volatile substances present therein, from the first to the second chamber by a duct apt to foster the attainment in the first chamber of the stay times needed for partial volatilization; feeding into the second chamber other fine fraction, which mixes to that already treated in the first chamber; injecting and distributing into the second chamber other combustion supporter, by at least two nozzles arranged on a pipe coaxial to the second chamber, with total removal of the volatile substances present in the fine fraction to be treated and holding of the temperature of 400-600° C.; collecting the fine fraction free from the volatile components.