METHOD FOR RECOVERING VALUABLE METALS FROM DISCARDED ELECTRIC WIRE

摘要

PROBLEM TO BE SOLVED: To provide a method for recovering valuable metals from discarded electric wires by which the discarded electric wire is efficiently treated to obtain the valuable metals further higher in value.

SOLUTION: This method comprises: a first process, in which the discarded electric wires including the pre-cut electric-wires with oil being the raw material is charged into a rotary kiln and heated by using over-heated vapor to carburize the portion other than metals; a second process, in which the discarded electric wires treated in the first process is crushed to produce the powdery material mainly composed of the carbide and granular material composed of the metalsother than the carbide; and a third process, in which the granular material and the powdery material produced in the second process are separated from each other.

COPYRIGHT: (C)2010,JPO&INPIT