The processing of scrap and scrap cars starts with size reduction by a hammermill, or shredder. After the liberation the magnetic fraction is removed. The remaining non-magnetic fraction mixed with other materials is screened and each fraction is processed seperately. The increased use of plastic has a negative effect on the recovery of metals and waste production. At Huron Valley, Belleville Michigan, USA, the non-ferrous fraction from 5 million obsolete cars per year, containing 200000 ton of non-ferrous metal is processed. Aluminium is recovered with a heavy medium separation process and concentrated with eddy current separators. The remaining heavy non-ferrous fraction is concentrated by a new combination of eddy current separation and image processing. After this separation process the zinc fraction is melted and refined and the copper, brass, stainless steel and other high-quality concentrates are sold to the secondary industries.
New developments in the processing of the non-ferrous metal fraction of car scrap
Neue Entwicklungen beim Verarbeiten des Nichteisenmetallanteils von Autoschrott
1995
12 Seiten, 11 Bilder, 15 Quellen
Conference paper
English
Recent Technology in Recycling of Automotive Ferrous Metal Scrap
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