PROCESS AND SYSTEM FOR EXTRACTING PURE FERROUS SCRAP FREE FROM ADMIXTURES FROM A VARIETY OF SHREDDED SCRAP METAL

摘要

The invention relates to a method and a device for obtaining pure, additive-free scrap iron from a mixture of comminuted scrap metal. The device and the method are characterized in that individual steps are carried out in order to remove iron from additives adhering to the iron. In the process, emphasis is placed particularly on copper and copper-containing additives. Comminuted scrap metal is divided into small and large scrap parts using a sieve device. The small scrap parts are transported to an ejecting machine, and the large material parts are returned to the comminuting machine. In the ejecting device, copper-containing material is ejected, and iron which still contains copper is guided to a special over-belt magnet via a vibrating trough, said over-belt magnet permanently and intensively shaking and rocking the copper-containing material over the entire belt section on the basis of the technical design of the over-belt magnet such that all nonmagnetic additives drop down from the iron, and iron with a copper content of only 0.01% to a maximum of 0.1% is obtained.