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:
Aug. 19, 1980
Filed:
Aug. 14, 1978
Applicant:
Inventors:
Horst Herchenbach, Troisdorf, DE;
Hubert Ramesohl, Bergisch-Gladbach, DE;
Assignee:
Klockner-Humboldt-Wedag AG, , DE;
Primary Examiner:
Int. Cl.
CPC ...
F27B / ; C04B / ;
U.S. Cl.
CPC ...
432 14 ; 106100 ;
Abstract
Method and apparatus for heat treatment of comminuted raw material of the type used, for example, for the production of cement in which the material is preheated in a preheater by means of hot exhaust gases from a kiln, the material is separately calcined for the deacidification of a portion of the calcium carbonate present and is subsequently burnt to completion in the kiln. The specific improvement of the present invention involves utilizing undispersed coarse pieces of fuel for the separate calcination and conducting the separate calcination at the material inlet end to the kiln.