ABSTRACT
Most of the scrap aluminum recycled today is remelted in a furnace fired with fossil fuels, most commonly natural gas. Furnaces of this type have been used since the recycling of aluminum began, and while the number of designs has proliferated, the fundamentals behind the melting of aluminum have not. Appreciation of these fundamentals is important to understanding the reasons for the numerous furnace designs and equipment innovations that have taken place over the past 20 years.
