B - Operations – Transporting – 09 – B
Patent
B - Operations, Transporting
09
B
241/141
B09B 5/00 (2006.01) B08B 3/02 (2006.01) B09C 1/06 (2006.01)
Patent
CA 2001610
ABSTRACT What is proposed is a method and an apparatus for reprocessing contaminated soil and like materials by stripping, decontaminating and refilling the stripped area with cleaned soil. The stripped soil is dried and crushed in a mill through which hot gases flow, the resulting mixture of solids and gas being passed to a cyclone separator where it is separated into its gaseous and solid constituents. The solids are treated at an elevated temperature, this being where an initial decontamination takes place. Following a further separation of the solid and gaseous phases in an additional cyclone the solids, which are at least still partly contaminated, are introduced into a holding zone in the form of a through area where they are treated at temperatures corresponding substantially to the decontaminating temperature. The waste gases from the mill and decontaminating unit are subject to thermal after burning, and for reasons related to power engineering, are used again, at least in part, in the decontaminating process.
Grothaus Franz-Josef
Kreft Wilfried
Macrae & Co.
O. & K. Orenstein & Koppel Aktiengesellschaft
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