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:
Jul. 11, 1978
Filed:
Jun. 16, 1976
Applicant:
Inventor:
Patrick W MacKay, Monterrey, MX;
Assignee:
Fierro Esponja, S.A., Monterrey, MX;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75 35 ; 75 91 ;
Abstract
An improvement in a method for the batchwise gaseous reduction of iron ore to sponge iron in a multiple unit reactor system including a cooling reactor and at least one reduction reactor. Reduction is effected with a gas composed largely of carbon monoxide and hydrogen which may be, for example, generated by reforming a mixture of steam and natural gas or other gaseous hydrocarbons at an elevated temperature. The reducing gas requirement of the system is decreased by adding to the gas fed to one or more of the reduction reactors a minor amount of a hydrocarbon gas or vapor, e.g., natural gas, methane or a combination of methane and recycled spent reducing gas.