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:
Apr. 28, 1981
Filed:
Sep. 04, 1979
Applicant:
Inventors:
Friedrich Bardenheuer, Krefeld, DE;
Alois Junker, Dusseldorf, DE;
Horst Konig, Duisburg, DE;
Gero Rath, Mulheim, DE;
Assignee:
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 12 ; 75 11 ;
Abstract
A method is provided for producing steel in an economically acceptable fashion from iron sponge with less than 66% Fe and with high acid slag formers. This is achieved by first determining the acid slag forming composition of the iron sponge, and, thereafter, lining an electro-slag-resistance furnace with a lining compatible with the iron sponge composition. Then, the iron sponge is charged to the furnace and the liquid metal formed is withdrawn to a conventional arc furnace, for example, for further processing.