Extraction of non-ferrous metal from metal scrap parts by liquation and tunnel furnace installation therefor

摘要

Recovery of non-ferrous metals from objects (38) consisting of or containing both ferrous and non-ferrous materials takes place comprises heating such objects to a separation temperature which lies between the melting points of the ferrous and non-ferrous materials, and collecting the molten non-ferrous material. The objects (38) are transported continuously, without preliminary comminution, through a tunnel furnace (1), which is provided with an appropriate transport system (35) and are heated there to a separation temperature, with collection of the resulting molten non-ferrous material.