Patent ID: 6484416
Filing Date: 2002-11-26
Classification: C04B,F27B,F27D

Abstract:
A system for producing cement clinker from a wet slurry raw material comprising:a dewatering mechanism for desiccating the wet slurry raw material to form a dewatered raw material; a step drier for thermally drying the dewatered raw material, the step drier including two separating and drying zone limiting walls surrounded by a housing and forming a separating and drying zone between the two separating and drying zone limiting walls, the two separating and drying zone limiting walls having baffles that are transversely downwardly slanted in a direction of a discharge opening for separated coarse material, the baffles being arranged in a cascade-like manner, whereby the baffles and the separating and drying zone formed between the baffles are obliquely arranged at an angle deviating from a vertical line; and a cyclone heat exchanger having a hot gas conduit for transporting hot gas from the cyclone heat exchanger to the step drier wherein the two separating and drying zone limiting walls are traversed by the hot gas received from the cyclone heat exchanger in a cross current.