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:
Dec. 03, 1985
Filed:
May. 17, 1983
Enrique R Martinez-Vera, Monterrey, MX;
Alberto Bustani-Adem, Monterrey, MX;
Hylsa, S.A., Monterrey, MX;
Abstract
The present invention relates to a process for the production of metallic iron through direct reduction of iron ores and particularly to an optimized process which permits operation at higher reducing temperatures with minimized problems of sinterization and agglomeration of iron ore particles. It is also an object of the present invention to provide a process wherein the required size of the reducing gas generating unit is reduced. Both objects are preferably achieved by means of injecting only natural gas, or a similar methane-containing gas into the cooling loop of the direct reduction process and venting a portion of the cooling gas from the cooling zone to the reducing zone (preferably, on the order of 1% to 2% of the methane content of the cooling gas in relation to the volume flow of the reducing gas).