Contaminated ground treatment device

The device has a high pressure jet tube (1) complete with inlet (4) and outlet (6) rimmed by nozzles used to drive a driving cone (10-12) within the tube. A rotation-symmetrical container (2) is fed by a tangential inlet (13) adjoining an outlet tangentially spaced from the head of the container. The container has its own top-side gas vent (18) and bottom discharge (17). The container has a wearproof inner lining (22) at the inlet as arranged in the centre of the tower-type container. The container has a converging floor (21) and the inside dia. of a container sector adjoining the inlet that the peripheral wall of the container round the interior (15) describes a smaller curvature. A top-side gas deflecting elbow (23) issues into the container and the outlet (6) is designed as a lineally divergent flow tube with discharge (17). The jet tube (1) is a stage component fitted out with a line of cones in series, and is preceded by a de-sludger (24). The jetted mixture descends over the curved wall surface after the necessarily diminished wall impact (16) which exerts decelerating demixing action.