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:
Apr. 08, 1997
Filed:
Apr. 24, 1995
Gunther Koeberer, Hamburg, DE;
Egbert Steffen, Hamburg, DE;
Gerhard Bomba, Braunschweig, DE;
Franz-Josef Grothaus, Ennigerloh, DE;
Gerhard Zakel, Warendorf, DE;
Krupp Fordertechnik GmbH, Duisburg, DE;
Abstract
A method of cooling white cement clinker sintered in a rotary kiln includes the following steps: introducing the white cement clinker from the rotary kiln into a first cooling stage; comminuting the white cement clinker in the first cooling stage; quenching the white cement clinker with a coolant in the first cooling stage in a short dwell period in an oxygen-poor environment to a mean temperature of approximately between 650.degree. C. and 750.degree. C.; introducing the white cement clinker from the first cooling stage into a second cooling stage; mixing and simultaneously conveying the white cement clinker in the second cooling stage in an oxygen-poor environment for a period of at least 15 seconds for obtaining a homogeneous mixture of particles of the white cement clinker and for further cooling the white cement clinker to a temperature of approximately between 550.degree. C. and 650.degree. C.; after the mixing and conveying step, introducing the white cement clinker into a third cooling stage; and cooling the white cement clinker in the third cooling stage by an air stream.