Agenda - Council - 11/13/1990 - Laserfiche WebLink

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I I I ! I i I I I I I I I I I I I I This has created a undue hardship for DAPI. This furnace was being erected to operate in place of the existing unit until permission was received from the City of Ramsey to operate both simultaneously. The existing furnace requires extensive maintenace needing approximately three weeks to repair. Thus, it is imperative that the. new furnace be completed before the existing furnace becomes inoperable creating a financial hardship. FACILITY DESCRIPTION DAPI is a secondary aluminum recovery facility that recovers aluminu~ from various scrap material such as castings, plate and aluminum/iron combinations. The facility has a Shaffer Aluminum Sweating Furnace, Model 2500, that recovers an average of 400 lbs per hour of aluminum from a totals.process input of 800 lbs per hour. The furnace is a batch operated process that is charged with scrap material by opening a section of the furnace. Two 3 million BTU per hour propane burners supply heat to the system. The melted aluminum is recovered by pouring it into molds for further purification by others. The remaining iron and ash material are removed .and sent to others for processing. This furnace, has a maximum process input of~1600 lbs per hour for an aluminum recovery rate of 1500 lbs per hour.: The furnace dust and fumes are removed with a W.W. Sly Pactecon Model PC No. 218-6 Baghouse. The furnace emissions enter a hood and are directed to the baghouse with an induced draft fan where they are~removed. DAPI had been'erecting a second aluminum sweating furnace to supplement its existing furnace. However, this construction was stopped by order of Jacqueline M. Deneen as indicated above. This furnace will be 7 ft in diameter by 9 ft long. It will be designed to recover an average of 600 lbs per hour from a total process input of 1200 lbs per hour. It will have the potential to process up to 2000 lbs per hour of input material. Four 2 million BTU per hour propane burners will supply heat to the furnace to melt the aluminum. This'furnace will initially be used to replace the existing unit. It will be ducted to the existing baghouse to remove any particulate emissions. DAPI will be applying to the City of Ramsey for permission to operate both furnaces simultaneously. DAPI is presently evaluating an afterburner system to handle the emission from both furnaces. An amendment to the Air Quality Permit will be requested when the afterburner evaluation has been completed to operate both furnaces at the same time. ?/