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:
Mar. 16, 1976
Filed:
Sep. 16, 1974
William Volk, Princeton, NJ (US);
Hydrocarbon Research, Inc., Morristown, NJ (US);
Abstract
The capacity and effectiveness of a fluidized multi-bed process for the direct reduction of broad size-range metallic oxides, such as ion oxide particles, can be materially improved by feeding the large-size particles into the uppermost zone and the fine-particle material such as bag dust to the lowest zone of a multiple bed reducer. The larger particles in the upper zones tend to restrain the fine particles from being carried out of the reducer by upwardly flowing reducing gas. In the lower zone location, complete reduction of the fine oxide particles is much more effective, as the reaction is initiated by the fresh reducing gas, which is normally high purity hydrogen.