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:
Jun. 10, 2008
Filed:
Jan. 13, 2003
Matthias Meyn, Hilden, DE;
Peter Monheim, Dorsten, DE;
Reinhard Scholz, Clausthal-Zellerfeld, DE;
SMS Demag AG, Dusseldorf, DE;
Abstract
In the metallurgical treatment of metals, metal melts and/or slags in a metallurgical unit or melting vessel, especially in electric arc furnaces, injection devices () are used for blowing in or up oxygen-rich gases () and/or carbonaceous substances, which cause as long as possible gas jet (') with a high pulse energy to strike to strike the surface of the slag or metal. It is known to envelope produced gas jet (′), thereby focusing it. According to the invention, such an envelope is obtained by using a hot gas (′) that is preaccelerated to such a degree that the central gas jet (′) is preferably without pulse losses.