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:
Oct. 09, 2001
Filed:
Sep. 05, 2000
Christopher Z. Sieradzki, Monee, IL (US);
Craig L. Peters, Western Springs, IL (US);
Amsted Industries Incorporated, Chicago, IL (US);
Abstract
The present invention provides a system and method for collecting fumes from an arc furnace of the type typically used in metal foundries. The system provides an electrode hood with extended sides for improved collection of fumes from the vicinity of the electrodes. It also provides a movable spout hood for collection of fumes when metal is tapped. The furnace is tilted when metal is tapped. A tilting duct is connected to provide a path for emissions drawn into the hood on the furnace. The tilting duct moves with the furnace. A stationary duct leads to the bag house. The tilting duct and stationary duct meet at an interface and have facing openings that maintain a path for collecting fumes throughout the entire range of motion of the furnace. The stationary duct has a group of dampers that open and close as the furnace tilts to limit air intake to the portion of the stationary duct opening that is adjacent the tilting duct opening. Variable position dampers may be provided at the electrode hood and furnace door. In the bag house, there is a dust containment assembly to limit the movement of the collected dust. A variable speed fan may be used with the system.