Krupp Polysius Ag

Polysius Ag

Rudolf Weber

Horst Ritzmann

Wolf Goldmann

Wilfried Kreft

Georg Schepers

Frank Schaberg

Klaus Bauer

Heinrich Weber

Horst Kretzer

Rudiger Beyer

Herbert Schmelter

Erich Schnieder

Horst Riedel

Apparatus for extracting and analyzing dust-laden gas samples and in which a gas extraction connection is constructed in the form of a stilling chamber leading to an analyzer via a three-way valve to which is connected a cleansing air connection. A time control device periodically interrupts the flow of gas to the analyzer and directs cleansing air of the extraction connection.

Apparatus for extracting and analysing dust-laden gas samples

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

Oelde, Germany

Rudolf Weber