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. 21, 2013
Filed:
Apr. 05, 2012
Gerd Konig, Dinslaken, DE;
Wolfram Konig, Ibbenburen, DE;
Hans-heinrich Heldt, Viersen, DE;
Dieter-georg Senk, Aachen, DE;
Heinrich-wilhelm Gudenau, Aachen, DE;
Alexander Babich, Aachen, DE;
Gerd Konig, Dinslaken, DE;
Wolfram Konig, Ibbenburen, DE;
Hans-Heinrich Heldt, Viersen, DE;
Dieter-Georg Senk, Aachen, DE;
Heinrich-Wilhelm Gudenau, Aachen, DE;
Alexander Babich, Aachen, DE;
Thyssenkrupp At.Pro Tec GmbH, Essen, DE;
Abstract
Apparatus for operating a shaft furnace, whereby an upper section of the shaft furnace is charged with raw materials which due to gravity descend inside the furnace while the atmosphere prevailing within the shaft furnace causes part of the raw materials to melt and/or to be reduced, and in a lower section of the shaft furnace a process gas is injected so as to at least partly modify the atmosphere prevailing in the shaft furnace. The pressure and/or volume flow of the injected process gas is dynamically modulated within a time span of 40 s. Also, a shaft furnace operable by said method, thus achieving improved through-gassing.