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:
Feb. 06, 2007
Filed:
Oct. 22, 2001
Harald Berger, Linz, AT;
Peter Mittag, Linz, AT;
Bernhard Aigner, Offering, AT;
Voest-Alpine Industrieanlagenbau GmbH, Linz, AT;
Abstract
In a method and a device for melting down metal-containing material, preferably fine-particulate metal-containing material, such as sponge iron, in a metallurgical melting furnace (), wherein, in an interior space () of the melting furnace (), a metal melt () and a slag layer () floating on top of the metal melt () are maintained, the metal-containing material is added by means of a supply means dipping into the slag layer () and energy is added in the form of electric arcs (), the metal-containing material is charged directly into the central region (Z) of the melting furnace () by means of at least one charging tube () exclusively serving for conveying material via the charging tube outlet () of the same, the electric arcs () are directed obliquely towards the metal melt () against the central region (Z) of the melting furnace () and the metal-containing material is melted in the slag layer () and a mixed process slag-metal melt is maintained in the region of the charging tube outlet ().