THE ELECTROMAGNETIC FILTRATION OF MOLTEN ALUMINUM USING AN INDUCED-CURRENT SEPARATOR

The production of clean metal, free from oxides and other types of non metallic inclusions, is central to product quality and performance. To ward this end, electromagnetic filtration is an emerging technology fo r the purification of molten metals. This paper reviews the theory and the mechanism of the electromagnetic separation of inclusions from mo lten metal and describes the induced-current electromagnetic separator developed at the University of Alabama. The results of laboratory and large-scale experiments on the purification of molten aluminum demons trate the capability of the system for producing superclean metals.