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:
May. 13, 2003
Filed:
Feb. 06, 2002
Kenneth S. Price, Zionsville, IN (US);
Kim Lenti, South Holland, IL (US);
Heritage Environmental Services, LLC, Indianapolis, IN (US);
Abstract
A method of processing electric arc furnace (EAF) dust which involves processing the EAF dust through a basic oxygen furnace (BOF). The method encompasses recovery of iron value from the EAF dust and the concentration of zinc into a material that has more flexible opportunities for its use as a feed to zinc manufacturing processes. The iron and zinc values in the EAF dust can be added to existing iron oxide recovery processes. This allows the EAF dust to be used as a substitute iron feed for BOF's. The method of processing EAF dust and the components thereof results in the reduction of the burden for the regulatory tracking of EAF dust. In addition, the method of processing EAF dust provides economic savings which result from the reduction of processing fees and the recovery of the value of iron and zinc materials.