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:
Mar. 27, 2018
Filed:
Jan. 28, 2013
Cimenteries Cbr, Brussels, BE;
Redco, Kapelle-op-den-Bos, BE;
Joris Schoon, Brussels, BE;
Luc Van Der Heyden, Boortmeerbeek, BE;
Cimenteries CBR, Brussels, BE;
Redco, Kapelle-op-den-Bos, BE;
Abstract
Fiber cement material, which contains organic fibers, is used as an additional raw material for the production of cement clinker. The cement clinker is produced in a system which comprises a cyclone tower () and a rotating drum kiln (). The cyclone tower () comprises cyclones (-) and a pre-calciner unit () wherein fuel is combusted to feed the cyclone tower with heat. The raw clinker meal is passed through the cyclone tower to preheat it. By the combustion of the fuel in the pre-calciner unit () a hot zone is produced in the cyclone tower wherein the raw clinker meal is calcined. In order to be able to add larger amounts of the fiber cement material without causing a too high total organic carbon content of the exhaust gasses and/or without causing depositions of organic matter onto the inner walls of the cyclone tower (), the organic fiber cement material is added in a dry powdered form in said hot zone, in particular in the pre-calciner unit () to be heated in less than 5 seconds to a temperature of at least 800° C.