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:
Oct. 20, 1987
Filed:
Apr. 30, 1986
Dentaro Kaneko, Matthews, NC (US);
David C Meissner, Charlotte, NC (US);
Midrex International B.V. Rotterdam, Zurich, CH;
Abstract
A method of producing iron from finely divided iron oxide comprising the steps of: mixing iron oxide or iron ore fines with finely divided coal and a binder to form a mixture, agglomerating the mixture by compacting, pelletizing, or briquetting the mixture to form agglomerates or pellets, introducing the pellets to a rotary hearth furnace to prereduce the iron in the pellets, introducing the prereduced pellets into a smelting reduction vessel as the metallic charge constituent, introducing particulate carbonaceous fuel and oxygen to the smelting reduction vessel through the bottom of the vessel to react with the melt or bath within the vessel, reduce the iron to elemental iron and form an off gas containing CO and H.sub.2 introducing the off-gas into the rotary hearth furnace as process gas to prereduce the pellets therein, and drawing off the hot metal from the smelting reduction vessel. The prereduced compacts are preferably discharged from the rotary hearth furnace at a temperature of at least 1000.degree. C. into the smelting reduction vessel to form the molten iron product.