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:
Nov. 14, 1995
Filed:
Apr. 06, 1994
Paul E Queneau, Cornish, NH (US);
Martin Hirsch, Friedrichsdorf, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The invention describes a process for the manufacture of steel with a carbon content of <0.8 wt.-% by reducing iron ore and refining the hot metal. Iron ore and fuel are introduced into the reduction zone of a reactor that contains an iron melt in the reduction zone. This melt is covered by a liquid slag layer from which liquid slag is withdrawn. Further, oxygen-containing gas together with fuel is blown into the iron melt contained in the reduction zone. The iron melt extends into the refining zone of the reactor, the slag layer flows from the refining zone into the reduction zone and in the refining zone liquid steel is withdrawn. Oxygen-containing gas is supplied to the iron melt contained in the refining zone and liquid iron is withdrawn therefrom.