Polysius Ag

Krupp Polysius Ag

Klaus Bauer

Wolf Goldmann

Horst Ritzmann

Heinz-Herbert Schmits

Manfred J Durr

Wilfried Kreft

Peter Tiggesbaumker

Georg Schepers

Frank Schaberg

Dietmar Holsiepe

Horst Kretzer

Dieter Dreyer

Heinrich Weber

Rudolf Weber

Heinz G Mersmann

Hennig Korn

Rudiger Beyer

Herbert Schmelter

Erich Schnieder

Dieter Michaelsen

A process for the heat-treatment of fine-grained material which is preheated in a cyclone preheater, deacidified by additional fuel in a precalcination zone, and subsequently calcined to completion in a revolving tubular kiln. The gas temperature in the cyclone preheater and the material temperature after passage through the precalcination zone are measured, the difference between these temperatures is determined and, when the temperature difference reaches a maximum or minimum value, regulation of the fuel supply to the precalcination zone is switched to manual operation. In this way, the amount of fuel is rapidly adapted to the particular circumstances prevailing in the event of disturbances.

Process for the heat-treatment of fine-grained material

Processes and apparatus for the heat treatment of fine-grained material, particularly for the production of cement, wherein the material is preheated in a preheater, further heated in a precalcination zone using additional fuel, calcined to completion in a rotary kiln, and cooled in a cooler, the preheated material being introduced into a cooling air stream run off from the cooler and the resulting mixture of gas and solids being introduced from the side into a gas pipe which connects the rotary kiln to the preheater and through which the kiln exhaust gases flow in the upward direction.

Processes and apparatus for the heat treatment of fine-grained material

A process for producing cement wherein preheated, partially calcined powder-form raw material is finally calcined in a fluidized bed and is discharged to a cooler through which a cooling stream of air passes. A part of the cooling air passes into the fluidized bed from below and another part of the cooling air, together with the partially calcined material, passes into the fluidized bed from the side. The rates of material flow to and from the fluidized bed is regulated to maintain a substantially uniform intersticial ratio between the upper and lower regions of the fluidized bed.

Process for the production of cement in a fluidized bed

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Oelde, Germany

Klaus Bauer