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:
Apr. 06, 1999
Filed:
Sep. 12, 1997
Larry Strach, Ponte Vedra Bch, FL (US);
Gary M Carraux, Ponte Vedra Bch, FL (US);
Ronald H Ogletree, Jacksonville, FL (US);
DUOS Engineering (USA), Inc., Jacksonville, FL (US);
Abstract
Dry municipal solid waste material is subjected to a two-step magnetic separation process to recover ferrous values therefrom. The process includes passing the raw solid waste material through a shredder to reduce the waste to particles at a size of 3 inches or less, passing the particles through a series of two magnetic fields, recovering ferrous-containing fractions from each passage, combining the two ferrous-containing fractions and subjecting them to air classification in a cyclone separator to recover a clean particulate ferrous product, and a waste byproduct and recycling the waste byproduct to pass again through one or both of the two magnetic fields.