For aluminum smelters the use of aluminum scrap is cheaper than the use of primary aluminum but the typical high content of Zinc, Copper , Ferrous and Magnesium in scrap aluminum results in the use of scrap aluminum generally limited to no more than 10%.
The different SGM technology separators, including X-ray sorters, eddy current separators and magnetic ferrous separators process the scrap aluminum and segregate the parts with a high content of Zn, Cu, Fe and Mg from the aluminum scrap. The result is a main stream of scrap aluminum with Zn, Cu, Mg and Fe reduced by a multiple of times. With aluminum profile scrap, Zn can pass from the typical 0,16-0,25% down to 0,03-0,05%. With taint tabor, Zinc can pass from the typical 0,5% down to 0,10-0,15% and in the case of tense, can pass from the typical 5-6% down to 1-2%.
The result of the SGM technology and experience allows for increasing the percentage of the aluminum scrap in the infeed material to the smelter to over 80% leading to important savings on the aluminum sourcing cost.
With multiple references at aluminum smelters all over the world (Italy, Spain, Germany, the UK, USA, Korea, China, India, …) SGM disposes of an extensive experience to share with its customers.
The SGM supply can go from turn-key solutions to the sole supply of the main separators based on customer’s requirement and preference.