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:
Nov. 21, 2000
Filed:
Dec. 06, 1999
Daniel R Chapman, Tucson, AZ (US);
Other;
Abstract
In the present method of drying iron ore pellets, e.g., magnetite pellets, moisture-containing iron ore pellets are formed into a bed comprising a multiplicity of the pellets. A current of drying gas is forced upwardly through the bed of pellets to at least partially dry some of the pellets. A plurality of pipes, each having an opening such as an elongated slot provides counter-current jets of a drying gas above the bed. The drying gas jets are directed downwardly so as to impinge on the upper surface of the bed through which the current of drying gas rises. The bed of pellets is thus dried with the current of drying gas flowing through the bed from below as well as the jets of drying gas impinging onto the upper surface of the bed. In a preferred form of the invention, in a second stage downwardly directed jets of drying gas are used together with a downward current of drying gas to further dry the pellets before they are fired.