Process for recovering noble metals from electric and electronic wastes

The invention relates to a process for recovering noble metals from electric and electronic waste by means of a) adducts with alogens of cyclic dithioxamides of formula (1) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R,R' dazdt·nX 2 €ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein: R and R' are the same or different alkyls, X 2 are the same alogen or inter-alogen, and N is 1 or 2; b) adducts with alogens of non cyclic dithioxiamides of formula (2) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R,R'DTO·nX 2 €ƒ€ƒ€ƒ€ƒ€ƒ(2) wherein: R and R' are the same or different alkyls or aryls, X 2 are the same alogen or inter-alogen, and N is 1 or 2; c) adducts with alogens of tetralkylthiuram disulphide (Bis(diethylthiocarbamoyl)disulphyde) of formula (3) wherein: R and R' are the same or different alkyls or aryls, and X 2 are the same alogen or inter-alogen; and d) adducts with alogens of dimorpholinthiuram disulphyde (Bis(morpholinthiocarbamoyl) disulphyde) with morpholine as the only substituent of the nitrogens, having formula (4) wherein X 2 are the same alogen or inter-alogen.