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:
Aug. 09, 2011
Filed:
Sep. 18, 2008
Hideaki Fujimoto, Kobe, JP;
Tsuyoshi Mimura, Kakogawa, JP;
Itsuo Miyahara, Kobe, JP;
Takao Harada, Kobe, JP;
Masataka Tateishi, Kobe, JP;
Hiroshi Sugitatsu, Kobe, JP;
Hideaki Fujimoto, Kobe, JP;
Tsuyoshi Mimura, Kakogawa, JP;
Itsuo Miyahara, Kobe, JP;
Takao Harada, Kobe, JP;
Masataka Tateishi, Kobe, JP;
Hiroshi Sugitatsu, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A method for manufacturing molten iron comprises charging a carbonaceous material, a flux, and solid reduced iron obtained by thermally reducing carbon composite iron oxide agglomerates into an arc melting furnace and melting the solid reduced iron using arc heating in the melting furnace while an inert gas is blown into a molten iron layer from a bottom blowing tuyere on a bottom of the melting furnace, wherein: a carbonaceous material suspending slag layer is formed in an upper portion of a slag layer formed on the molten iron layer when the solid reduced iron is melted into the molten iron; a carbonaceous material coating layer having the carbonaceous material is formed on the carbonaceous material suspending slag layer; and the molten iron and the slag stored in the melting furnace are tapped from a tap hole formed in a lower portion of a furnace wall of the melting furnace.