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. 13, 1985
Filed:
Jul. 12, 1983
Applicant:
Inventors:
Erwin Fussl, Zurich, CH;
Max Ranner, Stallikon, CH;
Assignee:
Maerz Ofenbau AG, , US;
Primary Examiner:
Int. Cl.
CPC ...
F27B / ; F27D / ; F27D / ;
U.S. Cl.
CPC ...
432 14 ; 432 95 ; 432180 ;
Abstract
In a parallel flow regenerative shaft furnace having at least two furnace shafts and a transfer duct interconnecting the furnace shafts, limestone and similar mineral raw materials are calcined by operating the furnace shafts alternately, one as a calcining or parallel flow shaft and the other as a counterflow shaft, with burnt lime being discharged uncooled at the lower end of a calcining zone of the particular calcining shaft.