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:
Dec. 27, 1994
Filed:
Jul. 20, 1993
Hans-Georg Bergendahl, Bochum, DE;
Friedrich-Hans Grandin, Ratingen, DE;
Abstract
Sponge iron particles obtained in a reduction unit are, subsequently, subjected to a hot-briquetting process and supplied to the refining vessel in a condition in which they are still hot from the hot-briquetting process. By means of this measure, the amount of energy consumed in the steel making process is reduced. The transport of the sponge iron briquettes from the hot-briquetting unit to the refining vessel can preferably be carried out in heat-insulated buckets. Possible heat losses which may perhaps still occur can be compensated for by a preheater preceding the refining vessel. For this purpose, the hot sponge iron briquettes are filled into the preheater, where they will then be heated by the hot waste gases originating from the refining vessel. In addition, this process offers a solution for the smooth transition from the continuous production of sponge iron briquettes to the discontinuous refining process.