Polysius Ag

Erich Schnieder

Horst Ritzmann

Wolf Goldmann

Wilfried Kreft

Georg Schepers

Frank Schaberg

Klaus Bauer

Heinrich Weber

Rudolf Weber

Horst Kretzer

Rudiger Beyer

Herbert Schmelter

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

Growing community of inventors

Ahlen, Germany

Erich Schnieder