Method of treating metal/plastic composite waste material by heat decomposition

摘要

A method of treating a composite waste material including plastic and metal to recover metal effectively from the composite waste material. The method comprises a step of separating and recovering metal after thermally treating the composite waste material under a high temperature atmosphere by wholly or partly disassembling the composite waste material and directly bringing the composite waste material into contact with a high temperature gas containing little or no oxygen. The metals are separated and recovered by disassembling and selecting the thermally treated composite waste material with using a vibrating sieve machine, or by pressing cutting and pulverizing the thermally treated metal at a warm temperature.