of hot gases is passed to provide a mixture of solids and gases introducing the mixture into a cyclone separator where the mixture is separated into gaseous and solid components thermally treating the solid components in a decontamination zone at a temperature effective to decontaminate at least a portion of the solid components passing the solid components after thermally treating same in step into a dwell zone configured as a flow through region thermally treating the solid components within the dwell zone at a temperature effective to decontaminate at least a portion of the solid components cooling the solid components after step by transferring same into a cooling region of a cooling line thermally afterburning gaseous components from at least one of steps and in a burner cooling and filtering at least a part of the gaseous components from step and discharging the gaseous components from step to the atmosphere application_number US 67837091 A description the system according to fig1 is essentially constructed of the following apparatus components the soils to be decontaminated are pre broken and put into piles 1 rough comminution by way of loading units excavators conveyor belts or the like which are not shown in detail the coarse fractions are introduced into a mill 2 through which flow hot gases and which is connected by way of a pipeline 3 with a cyclone separator 4 from there the solids travel through a pipeline 5 into a.