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:
Nov. 16, 2010
Filed:
Nov. 02, 2007
Christoph Beyer, Muenster, DE;
Walter Egger, Radenthein, AT;
Christoph Beyer, Muenster, DE;
Walter Egger, Radenthein, AT;
Polysius AG, Beckum, DE;
Maerz Ofenbau AG, Zurich, CH;
Abstract
The invention relates to a process and an apparatus for calcining solids or sludges in a multiple-deck furnace having a firing region, which has at least one upper heated hearth and at least one lower heated hearth, and having a cooling region, which is provided with one or more unheated hearths, material to be calcined passing first into the firing region and then into the cooling region. A portion of the material to be calcined is delivered to the at least one lower heated hearth and/or to the cooling region, bypassing the at least one upper heated hearth of the firing region.