Krupp Polysius Ag

Polysius Ag

Heinrich Weber

Wilfried Kreft

Horst Ritzmann

Wolfgang Rother

Wolf Goldmann

Peter Tiggesbaumker

Karl Josef Menzel

Georg Schepers

Frank Schaberg

Klaus Bauer

Horst Kretzer

Rudolf Weber

Rudiger Beyer

Herbert Schmelter

Erich Schnieder

Herbert W Schmelter

The invention relates to a multiple-stage heat exchanger 1 in which at least one of the lower heat exchange stages contains a deflector/separator with a horizontal gas inlet pipe and a gas outlet, and at least the upper heat exchange stage has a conventional cyclone. This results in a considerable reduction in the energy requirement, the size and height of the construction.

Heat exchanger

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

Beckum, Germany

Heinrich Weber