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:
May. 09, 1978
Filed:
Sep. 17, 1976
Herbert Deussner, Bensberg-Refrath, DT;
Hubert Ramesohl, Bensberg-Refrath, DT;
Horst Herchenbach, Troisdorf, DT;
Abstract
An apparatus for the heat treatment of fine-grained material, particularly pulverized raw material for use in the manufacture of cement, the apparatus comprising a preheater composed of a plurality of superimposed cyclones, the preheater feeding a rotary kiln. An exhaust conduit is connected to the rotary kiln and has a combustion zone formed therein. The gas discharge from one of the intermediate cyclones is directed into the combustion zone. The exhaust conduit includes a pair of upper and lower concentric conduits, the upper conduit having its lower end received in spaced relation to the upper end of the lower conduit and terminating at the combustion zone. A fuel feed conduit is disposed between the lower end of the upper conduit and the upper end of the lower conduit. The arrangement provides for a more efficient treatment of finely divided particles with the hot gases.