The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1980
Filed:
Jul. 24, 1978
Klaus Bauer, Oelde, DE;
Wolf Goldmann, Beckum, DE;
Horst Kretzer, Beckum, DE;
Heinrich Weber, Beckum, DE;
Rudiger Beyer, Bad Waldliesborn, DE;
Wilfried Kreft, Ennigerloh, DE;
Frank Schaberg, Oelde, DE;
Rudolf Weber, Oelde, DE;
Herbert Schmelter, Ennigerloh, DE;
Horst Ritzmann, Enniger, DE;
Erich Schnieder, Ahlen, DE;
Georg Schepers, Ennigerloh, DE;
Polysius AG, Beckum, DE;
Abstract
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.