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:
Sep. 24, 2013
Filed:
Nov. 05, 2009
Georg Aichinger, Asten, AT;
Franz Berner, Asten, AT;
Stefan Lechner, Leonding, AT;
Marinko Lekic-ninic, Linz, AT;
Jan-friedemann Plaul, Linz, AT;
Johannes Leopold Schenk, Linz, AT;
Martin Schmidt, Leonding, AT;
Thomas Söntgen, Hamminkeln, DE;
Bogdan Vuletic, Düsseldorf, DE;
Kurt Wieder, Schwertberg, AT;
Johann Wurm, Bad Zell, AT;
Georg Aichinger, Asten, AT;
Franz Berner, Asten, AT;
Stefan Lechner, Leonding, AT;
Marinko Lekic-Ninic, Linz, AT;
Jan-Friedemann Plaul, Linz, AT;
Johannes Leopold Schenk, Linz, AT;
Martin Schmidt, Leonding, AT;
Thomas Söntgen, Hamminkeln, DE;
Bogdan Vuletic, Düsseldorf, DE;
Kurt Wieder, Schwertberg, AT;
Johann Wurm, Bad Zell, AT;
Siemens Vai Metals Technologies GmbH, Linz, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An injector insert pipe is arranged in the gas channel of a nozzle for injecting oxygen-containing gas into a pig iron production unit, wherein an interspace which surrounds the pipe is present over the entire pipe length between the wall of the gas channel and the pipe outer wall. The pipe extends at least as far as the nozzle end face which contains the mouth of the gas channel. The pipe space is connected to an oxygen-containing gas feed line, and the interspace is connected to a protective gas supply line. In a process, oxygen-containing gas is fed into the pipe space, which after it has flowed through the pipe, enters the production unit at an entry velocity, and the interspace is simultaneously flowed through by a gas which exits into the production unit at an exit velocity, wherein the entry velocity is greater than the exit velocity.