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. 30, 1999
Filed:
Jul. 26, 1996
Gianni B Arcaini, Jacksonville, FL (US);
Gary M Carraux, Ponte Vedra Bch., FL (US);
William R Gibbes, Neptune Beach, FL (US);
Duosengineering (USA), Inc., Jacksonville, FL (US);
Abstract
An improved process for processing ash resulting from the mass burning of municipal waste includes a shear-force shredder for the size reduction of bulky items, impact cleaning of ferrous metal items, and a rotary washer for cleaning non-ferrous metals. Further improvements include sending the ash through an air separation unit to remove paper, wood, plastic and other unburned debris before providing ash to an eddy current separator for non-ferrous metal removal. The resultant ash which is essentially free of ferrous metals and non-ferrous metals, unburned material and unshreddables is then treated to immobilize certain heavy metals thus creating treated ash aggregate (TAA). Ash is recycled through a closed loop in the process to increase removal efficiency of metals and the homogeneous nature of the recovered (TAA).