In a method and apparatus for processing materials comprising ashes from waste incineration plants and mineral residues to condition them in a short time by washing them and by subjecting them to electrodynamic processes and shock waves generated by high voltage spark discharges, the material is made chemically inert and aged so that it can be used immediately after treatment without harming the environment.
This is a Continuation-In-Part application of international application PCT/EP00/00279 filed Jan. 15, 2000 and claiming the priority of German application 199 02 010.8 filed Jan. 21, 1999.
