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pp 1 of 3 <br /> <br />FOREWORD <br /> <br /> The Shaffer Aluminum Recovery Furnace, Model 2500,owned <br />and operated by Danny's Trannies, is scheduled to be <br />relocated to a facility in Ramsey, MN. The new location will <br />require provisions to remove potential particulates from the <br />furnace flue gas to meet Local and State emission standards. <br /> <br /> A plant visit was arranged by Mr. Dan Karst to observe <br />the recyclable aluminum smelting operations in Rogers, MN on <br />March 7, 1989. <br /> <br /> This report presents the preliminary results on <br />installing a baghouse filter to lower any potential <br />particulate emissions to a level of less than 0.01 grains <br />per dry standard cubic foot. <br /> <br />RECOVERY FURNACE <br /> <br /> The Shaffer Aluminum Recovery Furnace, Model 2500, has <br />an input capacity of 2000 lbs/hr of feed material.The <br />furnace will recover approximately 1500 lbs/hr of aluminum <br />from the feed material. <br /> <br /> This furnace is a batch operated process and it is <br />charged with scrap aluminum by opening a section of the <br />furnace. A 3 M}~ BTU/hr propane burner supplies the heat to <br />the system. The furnace has two top located outlets that <br />direct the flue gases to a 12 foot by 8 foot hood. <br /> <br /> The furnace incorporates an induced draft fan that <br />draws the flue gas from the hood down into a one-stage <br />horizontal spray chamber that is designed to cool and remove <br />the particulates before being discharged to the atmosphere. <br /> <br />PLANT VISIT <br /> <br /> A reverberatory aluminum furnace was in operation at <br />the time of my visit and the stack effluent was observed for <br />a period of approximately one hour. The stack was clear with <br />no noticeable emissions. <br /> <br /> The aluminum scrap material stock piled for recovery <br />were noted to be of various types including castings, plate <br />and aluminum/iron combinations. <br /> <br /> <br />