Abstract
The handling of dross is an unfortunate but necessary activity in any aluminum cast house. One technology designed to cool dross and maximise metal recoveries is the dross press. Since its introduction to the industry in the mid 1990’s this technology has evolved to meet the demands of the modern cast house and ever more stringent environmental legislation. This paper describes developments that address the weaknesses and limitations of early systems and enhancements that have enabled the cooling of a wide variety of dross types including salt slag from rotary furnaces. The paper will discuss data and results from the first fully commercialized installation of a specially designed press for cooling salt slag from Tilt Type Rotary Furnaces. Finally the paper will look at some of the economical benefits of using a press through various economic models showing the positive effect small improvements in dross recoveries can have on plant profitability.
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