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. 12, 1976
Filed:
Jun. 17, 1975
Applicant:
Inventors:
Assignee:
Centro Sperimentale Metallurgico S.p.A., Rome, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75 35 ; 75 26 ; 75 34 ; 75 91 ;
Abstract
Iron ore is reduced in a multiple fluid bed reactor, the beds being vertically superposed in a tower and the ore passing by gravity downwardly from bed to bed. The lowermost and all superposed beds are fluidized by off gases from which carbon dioxide and water have been stripped; while a further portion of the fluidizing and reducing gas is provided by combusting methane with a substoichiometric quantity of oxygen and introducing the combustion products into an intermediate level of the column.