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. 13, 2012
Filed:
Nov. 08, 2007
Mark M. Brandon, Charlotte, NC (US);
Bradford G. True, Charlotte, NC (US);
Mark M. Brandon, Charlotte, NC (US);
Bradford G. True, Charlotte, NC (US);
Nu-Iron Technology, LLC, Charlotte, NC (US);
Abstract
A multiple moving hearth furnace () having a furnace housing () with at least two moving hearths () positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth () capable of being charged with at least one layer of iron oxide and carbon bearing material at one end, and being capable of discharging reduced material at the other end. A heat insulating partition () is positioned between adjacent moving hearths of at least portions of the conversion zones (), and is capable of communicating gases between the atmospheres of the conversion zones of adjacent moving hearths. A drying/preheat zone (), a conversion zone (), and optionally a cooling zone () are sequentially positioned along each moving hearth () in the furnace housing ().