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. 18, 2010
Filed:
Dec. 02, 2005
Applicant:
Matthias Meyn, Hilden, DE;
Inventor:
Matthias Meyn, Hilden, DE;
Assignee:
SMS Siemag Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21C 5/40 (2006.01); C21C 7/072 (2006.01);
U.S. Cl.
CPC ...
Abstract
At the production of the secondary steel based on scrap, wherein the scrap () is fed in a scrap preheater () through a charging device (), is preheated there and, finally, is brought into a smelting unit () and is melted there with primary energy only, the process gases (), which leave the smelting unit (), are not used any more for directly preheating the scrap () but are rather used indirectly by heating a gaseous preheatable medium, e.g., air () or inert gas, whereby energetic, fluidic, and spatial decoupling of preheating and melting and of post-combustion and preheating is achieved.