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. 24, 2010
Filed:
Apr. 27, 2009
John James Barnes, Hockessin, DE (US);
Stephen Erwin Lyke, Wilmington, DE (US);
Dat Nguyen, Chadds Ford, PA (US);
Akira Uragami, Hyogo, JP;
Isao Kobayashi, Hyogo, JP;
Mitsutaka Hino, Miyagi, JP;
Thomas Peter Battle, West Chester, PA (US);
Joseph M. Shekiro, Jr., Newark, DE (US);
John James Barnes, Hockessin, DE (US);
Stephen Erwin Lyke, Wilmington, DE (US);
Dat Nguyen, Chadds Ford, PA (US);
Akira Uragami, Hyogo, JP;
Isao Kobayashi, Hyogo, JP;
Mitsutaka Hino, Miyagi, JP;
Thomas Peter Battle, West Chester, PA (US);
Joseph M. Shekiro, Jr., Newark, DE (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a ferrous oxide-rich molten slag, (b) introducing the agglomerates onto a carbon bed of a moving hearth furnace; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a ferrous oxide-rich molten slag; (d) metallizing the ferrous oxide of the molten slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a molten state; and (e) solidifying the slag after metallization of the ferrous oxide to form a matrix of titanium oxide-rich slag having a plurality of metallic iron granules distributed there through; and (f) separating the metallic iron granules from the slag, the slag comprising greater than 85% titanium dioxide based on the entire weight of the matrix after separation of the metallic iron. The disclosure is also directed to a metallization product of a ferrous oxide-rich molten slag.