This environmentally friendly process combines the advantage of salt-free melting of contaminated aluminum scrap with a heating concept that optimizes energy consumption.
The Twin-Chamber Melting Furnace (TCF) was developed to melt aluminum scrap that contains different types of contamination, such as rubber, plastic materials, lacquers and oils, from various origins. The unique melting concept allows the scrap to be completely processed in the furnace without the need for pretreatment and without using salt. The charge normally consists of about 30% clean material and 70% scrap containing up to approximately 10% contaminants. The Schmitz + Apelt LOI Twin-Chamber Melting Furnace (Fig. 1) combines the advantage of salt-free melting of contaminated aluminum scrap with a heating concept that has been optimized with respect to energy and environmental aspects. It uses the combustible components included in the contaminants, a special charging method and a rotary generator to optimize energy consumption.