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:
Jun. 03, 1980
Filed:
Aug. 15, 1978
Donald Beggs, Charlotte, NC (US);
Ullrich-Horst Buskies, Bad Vilbel, DE;
John C Scarlett, Toledo, OH (US);
Midrex Corporation, Charlotte, NC (US);
Abstract
A method and apparatus for the direct reduction of iron in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide lean gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by reaction with lime in a first shaft furnace to form a hot reducing gas. The hot reducing gas is utilized as the reductant in a counterflow shaft reduction furnace and the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.